BIOLOGY VERY IMPORTANT 325 MCQS WITH ANSWERS
THESE ARE 325 MCQS WITH ANSWERS OF BIOLOGY RELATED TO CLASS 12 FSC PART 2 AND BOARD EXAMS PREPARATION OF ALL BOARDS OF PUNJAB. THESE MCQS WITH ANSWERS BIOLOGY ARE HELPING MATERIAL FOR THE ONLINE PREPARATION OF BIOLOGY MDCAT, MBBS, AND UHS ADMISSION ENTRY TEST PREPARATION. BIOLOGY MCQS WITH ANSWERS ARE EQUAL HELPFUL FOR THE CANDIDATE PREPARING THEMSELVES FOR TH EPPSC , FPSC BIOLOGY, BOTANY, ZOOLOGY LECTURER, NEET, CBSE, AND OTHER COMPETITIVE EXAMS. THIS TEST ALSO COVERS SOME OF THE TOPICS LIKE BIOLOGY MCQS WITH ANSWERS PDF, BIOLOGY MCQS WITH ANSWERS PDF FREE DOWNLOAD, BIOLOGY MCQS WITH ANSWERS, BIOLOGY MCQS WITH ANSWERS FOR ENTRY TEST, BIOLOGY MCQS WITH ANSWERS FOR CLASS 11, BIOLOGY MCQS WITH ANSWERS FOR ENTRY TEST PDF, BIOLOGY MCQS WITH ANSWERS CLASS 12, BIOLOGY MCQS WITH ANSWERS FOR CLASS 10, BIOLOGY MCQ WITH ANSWERS PDF FOR NEET, BIOLOGY MULTIPLE CHOICE QUESTIONS WITH ANSWERS PDF. ALL THE TOPICS CAN be SEEN IN THIS BIOLOGY MCQS WITH ANSWERS
1. Griffith was________scientist.
a) German b) British c) American d) Irish
Correct Answer
British
2. Predator-prey relationship has a significant influence on:
a) Abundance of organisms b) Distribution of organisms c) Non-availability of organisms d) both a & b
Correct Answer
Both a & b
3. Befouling of the environment is called:
a) Atmospheric pollution b) Water pollution c) Industrial effluents d) Pollution
Correct Answer
Pollution
4. Sacrum is formed by the fusion of_________vertebrae.
a) Posterior five b) Anterior five c) Posterior four d) Anterior four
Correct Answer
Anterior five
5. Meiosis II is just like the:
a) Meiosis I b) Mitosis c) Regeneration d) All of them
Correct Answer
Mitosis
6. The skin pigment-producing cells are:
a) Hepatocytes b) Melanocytes c) Lymphocytes d) Both b & c
Correct Answer
Melanocytes
7. The location of the Tundra ecosystem in Pakistan is:
a) Khan pur b) North Kallat c) Swat d) Hindukush
Correct Answer
Hindukush
8. In Phenylketonuria, phenylalanine is not degraded because of defective enzyme:
a) Phenylalanine oxidase b) Phenylalanine reductase c) Phenylalanine hydroxylase d) None of them
Correct Answer
Phenylalanine hydroxylase
9. The breakdown of RBC give rise to:
a) WBCs b) Platelets c) Bilirubin d)
Correct Answer
Bilirubin
10. The primitive streak represents the____& both _____of blastopore.
a) Ventral & lateral lips b) Proximal & lateral lips c) Dorsal & lateral lips d) None of them
Correct Answer
Dorsal & lateral lips
11. Phase which can remain for days, weeks, or even for the lifetime is:
a) b) c) d)
Correct Answer
12. Which of the following belongs to class Pinata?
a) Pinus b) Gymnosperm c) Angiosperm d) None of them
Correct Answer
Pinus
13. Forest is an:
a) Collection of trees b) A community with different population c) Environmental buffer d) None of them
Correct Answer
Environmental buffer
14. Peritoneal cavity is lined by:
a) Pleura b) Tonoplast c) Pericardium d) Peritoneum
Correct Answer
Peritoneum
15. Possible codons are:
a) 16 b) 20 c) 60 d) 64
Correct Answer
64
16. Diabetics are unable to metabolize blood:
a) Protein b) Urea c) Sugar d) Amino acid
Correct Answer
Sugar
17. The first photosynthetic organisms probably used _____________as a source of hydrogen
a) Hydrogen Chloride b) c) d)
Correct Answer
18. Who constructed the particle gun?
a) Sandford b) Muils c) Klein d) Both a & c
Correct Answer
Both a & c
19. Soil is continuously depleting its mineral nutrients, due to vigorous:
a) Deforestation b) Afforestation c) Crop production d) All of them
Correct Answer
Crop production
20. Forests regulate the flow of ________in the streams.
a) Minerals & nutrients b) Natural organic materials c) Air & natural gases d) Water
Correct Answer
Water
21. Each nephron inner end forms a cup-shaped swelling called:
a) Glomerulus b) Bowman's capsule c) Loop of Henle d) Urethra
Correct Answer
Bowman's capsule
22. Highly condensed portions of the chromatin is:
a) Euchromatin b) Heterochromatin c) Both a & b d) None of them
Correct Answer
Heterochromatin
23. There are ______main types of cytoplasmic processes or fibres.
a) 1 b) 2 c) 3 d) 4
Correct Answer
2
24. In grassland third layer is formed by:
a) Tall grasses b) Short grasses c) Mosses & lichens d) Both b & c
Correct Answer
Both b & c
25. ________occurs in early age before 40.
a)Type IV diabetes b) Type III diabetes c)Type II diabetes d) Type I diabetes
Correct Answer
Type I diabetes
26. The search for the mechanism of inheritance of sex started after the discovery of:
a) Morgan's work b) Mendel's work c) Bridge's work d) None of them
Correct Answer
Mendel's work
27. In the case of a human cell, mitosis takes:
a) 30 sec b) 30 min c) 3 hours d) 3 min
Correct Answer
30 min
28. The serum of O blood type has:
a) Anti-A antibodies b) Anti-B antibodies c) Both a & b d) None of them
Correct Answer
Both a & b
29. Probe hybridize with a certain piece of:
a) RNA b) DNA c) Both a & b d) None of them
Correct Answer
DNA
30. All organism uses the same basic mechanism of:
a) Reading the gene b) Expressing the gene c) Both a & b d) None of them
Correct Answer
Both a & b
31. Rollers is a __________variation inherited in simple Mendelian fashion.
a) Continuous b) Discontinuous c) Both a & b d) None of them
Correct Answer
Discontinuous
32. Thomas Hunt Morgan worked on:
a)
Drosophila Sechellia
b) Drosophila melanogaster c) Drosophila simulans d)
Drosophila yakuba
Correct Answer
Drosophila melanogaster
33. The ABO blood group system is encoded by a single ______________.
a) Monomorphic gene A b) Polymorphic gene A c) Monomorphic gene I d) Polymorphic gene I
Correct Answer
Polymorphic gene I
34. C, D, E genes occupy _____linked loci.
a) Two loosely b) Two tightly c) Two intermediately d) None of them
Correct Answer
Two tightly
35. Alzheimer's disease was discovered in:
a) 1806 b) 1877 c) 1907 d) 1977
Correct Answer
1907
36. The full genetic code was determined during mid _________.
a) 20's b) 40's c) 60's d) 80's
Correct Answer
60's
37. ___________is relatively a small enzyme.
a) DNA Polymerase I b) DNA Polymerase II c) DNA Polymerase III d) None of them
Correct Answer
DNA Polymerase I
38. Aldosterone is the principal mineralocorticoid and conserve the level of:
a) Ca b) Na c) Mg d) None of them
Correct Answer
Na
39. Closer the two gene loci, more __________ are their genes linked.
a) Weakly b) Strongly c) Moderately d) None of them
Correct Answer
Strongly
40. There are _______stages of differentiation
a) 1 b) 3 c) 4 d) 5
Correct Answer
5
41. In 1952 by Hershey & Chase experimented with bacteriophages:
a) b) c) d)
Correct Answer
42. ________assist in binding of tRNA to the exposed mRNA codon.
a) Initiation factor b) Sigma factor c) Elongation factor d) Releasing factor
Correct Answer
Elongation factor
43. Root nodules is the example of:
a) Mutualism b) Symbiosis c) Commensalism d) None of them
Correct Answer
Mutualism
44. In eukaryotes the length of Okazaki fragment is:
a) 10-20 b) 100-200 c) 1000-2000 d) 10000-20000
Correct Answer
100-200
45. Removal of forests causes:
a) Reduce in cloud cover b) Increase in the day, night temperature c) Reduction in rainfall d) All of them
Correct Answer
All of them
46. Hot water or steam carrying geothermal energy comes up to the surface in some part of the world such as:
a) New Zealand b) Ice Land c) Both a & b d) None of them
Correct Answer
Both a & b
47. Bipedal locomotion freed the front appendages, which become adapted for:
a) Fight b) Flight c) Prey captured) Both b & c
Correct Answer
Both b & c
48. Phytochrome is_____colour pigment.
a) Green b) Brown c) Blue-green d) Yellow
Correct Answer
Blue-green
49. tRNA is synthesized by:
a) RNA Polymerase I b) RNA Polymerase II c) RNA Polymerase III d) RNA Polymerase IV
Correct Answer
RNA Polymerase III
50. Genes that code for therapeutic and diagnostic proteins are incorporated into the animal's DNA, and the proteins appear in
the animals
a) Blood b) Meat c) Milk d) Urine
Correct Answer
Milk
51. Nucleotides are added to template DNA by:
a) DNA Polymerase I b) DNA Polymerase II c) DNA Polymerase III d) None of them
Correct Answer
DNA Polymerase III
52. Shuffling of _______due to meiosis and random fertilization has no effect on the overall genetic structure of a population.
a) Genome b) Genes c) Allele d) None of them
Correct Answer
Allele
53. In Drosophila the female had two similar _________shaped X-chromosomes.
a) b) c) Rod d)
Correct Answer
Rod
54. In Drosophila the heterozygote having pigmented eyes is the example of:
a) Over dominance b) Codominance c) Incomplete dominance d) None of them
Correct Answer
Over dominance
55. Tschermach was________
a) Botanist b) Zoologist c) Microbiologist d) Embryologist
Correct Answer
Botanist
56. In the atmosphere, the "atom" means:
a) Place b) Earth c) Air d) Sky
Correct Answer
Air
57. The "eco" part of the ecosystem is related to the:
a) Community b) Species c) Environment d) All of them
Correct Answer
Environment
58. All non-cultivated and non-domesticated animals refer to:
a) Natural life b) Wildlife c) Mutant d) None of them
Correct Answer
Wildlife
59. Retrovirus is:
a) DNA virus b) RNA virus c) Both a & b d) Prion
Correct Answer
RNA virus
60. Gonadotrophic hormones are:
a) Luteinizing hormone b) Follicle-stimulating hormone c) Prolactin d) All of them
Correct Answer
All of them
61. Chronic arthritis includes:
a) Osteoarthritis b) Rheumatoid arthritis c) Gouty arthritis d) All of them
Correct Answer
All of them
62. It has been observed that gibberellins are responsible for:
a) Hyponasty b) Epinasty c) Thigmotropism d) None of them
Correct Answer
Hyponasty
63. RNA polymerase synthesize RNA from_________direction.
a) b) c) Both a & b d) None of them
Correct Answer
64. In _______________chromosomes become visible, shorten and thick.
a) Diakinesis b) Diplotene c) Leptotene d) None of them
Correct Answer
Leptotene
65. DNA threads are chemically cut into pieces of different sizes in:
a) Sanger's method b) Sanford's method c) Maxam-Gilbert method d) None of them
Correct Answer
Maxam-Gilbert method
66. For every ____K ,______Na ions are exchanged.
a) 3 & 2 b) 2 & 3 c) 2 & 4 d) 3 & 4
Correct Answer
2 & 3
67. Who had given the name "gene"?
a) Mendel b) Morgan c) Carl Correns d) Johannsen
Correct Answer
Johannsen
68. Mechanoreceptors are for:
a) Amino acid b) Glucose c) Touch d) Both a & b
Correct Answer
Touch
69. When living and non-living interact to produce a stable system in which the exchange of materials with the flow of energy takes
place, it forms a/ab
a) Environment b) Ecosystem c) Stable community d) Ecological succession
Correct Answer
Ecosystem
70. About ________water is needed to excrete 1g of ammonia nitrogen.
a) 5ml b) 50.0ml c) 500ml d) 100 ml
Correct Answer
500ml
71. When wheat grains were grown to mature plants and crossed with each other, grains had the number of white
grains were:
a) 1 b) 6 c) 15 d) 20
Correct Answer
1
72. Type of littoral vertebrate is
a) Turtles b) Aquatic snakes c) Flatworms d) Both a & b
Correct Answer
Both a & b
73. Fallopian tube is also called as:
a) Oviduct b) Seminiferous tube c) Uterine tube d) Both a & c
Correct Answer
Both a & c
74. Darwin's theory of evolution was mainly based on the evidence from the:
a) Geographical distribution of species b) Fossil records c) Genetics d) Both a & b
Correct Answer
Geographical distribution of species
75. One growth ring is formed in_____year.
a) 1 b) 2 c) 3 d) 4
Correct Answer
1
76. Soyabean plants have been made resistant to a common:
a) Fungicide b) Insecticide c) Herbicide d) All of them
Correct Answer
Herbicide
77. ________is used in brewing industry.
a) IAA b) Ethane c) GA d) GA
Correct Answer
GA
78. For _____years biologist did little research on nucleic acid because nothing was known of its function in cells.
a) 20 b) 30 c) 40 d) 50
Correct Answer
50
79. The frequency of abortions of Edward's syndrome is about:
a) 1/40 b) 1/200 c) 1/33 d) 1/18
Correct Answer
1/200
80. In pure form ozone is:
a) Redish b) Blackish c) Brownish d) Bluish
Correct Answer
Bluish
81. Muscles have no striations:
a) Skeletal b) Cardiac c) Smooth d) None of them
Correct Answer
Smooth
82. The ecosystem consists of______basic interacting components.
a) Two b) Three c) Four d) Five
Correct Answer
Two
83. The branch deals with the abnormal developments is:
a) Teratology b) Gerontology c) Entomology d) None of them
Correct Answer
Teratology
84. The frequency of abortions of Down's syndrome is about:
a) 1/700 b) 1/33 c) 1/40 d) 1/200
Correct Answer
1/40
85. Forebrain is further divided into:
a) Limbic system b) Thalamus c) Cerebrum d) All of them
Correct Answer
All of them
86. Origin site of replication is one in:
a) Eukaryotes b) Prokaryotes c) Both a & b d) None of them
Correct Answer
Prokaryotes
87. Which affect both men & women equally?
a) Haemophilia A b) Haemophilia B, c) Haemophilia C d) Both a & b
Correct Answer
Haemophilia C
88. On the basis of structure and shape of the cap,_________species of Acetabularia have been identified.
a) 1 b) 2 c) 3 d) 4
Correct Answer
2
89. Which term means "same alleles?"
a) Heterozygous b) Homozygous c) Hybrid d) None Both a & b
Correct Answer
Homozygous
90. Human blood groups can be of many types like:
a) ABO b) MNSs c) Rh d) All of them
Correct Answer
All of them
91. Chromosomes was first observed by Fleming in:
a) 1862 b) 1872 c) 1882 d) 1892
Correct Answer
1882
92. How many pairs of spinal nerves arise from or lead to the spinal cord:
a) 31 b) 33 c) 37 d) 23
Correct Answer
31
93. In case of human cell, average cell cycle is about__________.
a) 2.4 hours b) 20 hours c) 24 mins d) 24 hours
Correct Answer
24 hours
94. Natural selection can amplify or diminish only those variations that are:
a) Heritable b) Non-heritable c) Common d) None of them
Correct Answer
Heritable
95. Urine leaves the body, during urination, from the bladder through a tube called:
a) Ureter b) Urethra c) Urinal d) None of them
Correct Answer
Urethra
96. Which is not the component of the internal environment of a living organism which may be affected by fluctuations in the external
environment
a) Water b) Solutes c) Light d) Temperature
Correct Answer
Light
97. Chrysanthemum is the example of:
a) Short-day plants b) Long-day plant c) Day-neutral plants d) All of them
Correct Answer
Short-day plants
98. Humerus forms ball and socket joint with:
a) Starnum b) Sacrum c) Hip bone d) Scapula
Correct Answer
Scapula
99. The gill pouches of mammals and birds' embryos are:
a) Supportive "ontogeny
recapitulates phylogeny"
b) Homologous structures c) Used by the embryos
to breathe
d) Evidence for the degeneration of
unused body parts
Correct Answer
Homologous structures
100. The fishes have trimethylamine oxide for protecting against:
a) Urea b) Uric acid c) Ammonia d) None of them
Correct Answer
Urea
101. Excess thyroxine produces a condition called:
a) Parkinson's disease b) Addison's disease c) Alzheimer's disease, d) Grave's disease
Correct Answer
Grave's disease
102. Rosalind Franklin was_______scientist.
a) British b) American c) German d) Irish
Correct Answer
British
103. Compact bone is dense and strong and provides an attachment site for:
a) Skin b) Tendon c) Ligament d) Muscle
Correct Answer
Muscle
104. Diabetes mellitus is actually a___________ group of disorders.
a) Homogenous b) Heterogenous c) Hemigenous d) Both a & b
Correct Answer
Heterogenous
105.
What do the arrows represent?
a) Water evaporating b) Photosynthesis c) Energy being transferred d) All of them
Correct Answer
Energy being transferred
106. Biosource Technologies located in Vacaville reported that they have been able to use the_______ as a vector to introduce a
human gene.
a) Retrovirus virus b) TMV c) HBV d) LMC
Correct Answer
TMV
107. About ________of the earth surface is covered with water.
a) 90% b) 80% c) 70% d) 60%
Correct Answer
70%
108. Biosphere is spread out over the surface of the planet earth extending about ________.
a) 4-8 km b) 8-10 m c) 8-10 km d) 18-20 km
Correct Answer
8-10 km
109. Haemophilia A is:
a) Allelic recessive sexlinked
b) Non-allelic dominant sexlinked
c) Non-allelic recessive sexlinked
d) Allelic dominant sexlinked
Correct Answer
Non-allelic recessive sex-linked
110. Coccyx is formed by the fusion of_________vertebrae.
a) Posterior five b) Anterior five c) Posterior four d) Anterior four
Correct Answer
Posterior four
111. Environment also as strong influence on_______ in humans.
a) Height b) Intelligence c) Skin colour d) All of them
Correct Answer
All of them
112. The location of Temperate Deciduous Forests in Pakistan is:
a) Swat b) Chitral c) Shogran d) Both b & c
Correct Answer
Shogran
113. Each myosin filament is surrounded by _______actin filaments on each end.
a) 2 b) 4 c) 6 d) 8
Correct Answer
6
114. Urea is detoxified form of____________in urea cycle:
a) Uric acid b) Ammonia c) Carbon dioxide d) All of them
Correct Answer
Ammonia
115. Who discovered MN blood types in a man?
a) Levine b) Landsteiner c) Correns d) Both a & b
Correct Answer
Both a & b
116. Longitudinal and lateral nerves are absent in:
a) Planaria b) Hydra c) Both a & b d) None of them
Correct Answer
Hydra
117. There are___________types of sclerenchymatous cells.
a) 1 b) 2 c) 3 d) 4
Correct Answer
3
118. The location of the Desert ecosystem in Pakistan is:
a) Kara-Koram b) Fort Abbas c) Kallat d) Dir
Correct Answer
Fort Abbas
119. Secondary oocytes are:
a) HAPLOID b) DIPLOID c) TRIPLOID d) NONE OF THEM
Correct Answer
1n
120. Buoyancy in water is maintained by a specialized structure in________.
a) Crap b) Bony fish c) Snake d) Birds
Correct Answer
Bony fish
121. If plants are grown without light, they become___________.
a) Small b) Extremely small c) Long d) Extremely long
Correct Answer
Extremely long
122. The concentration of cell bodies of neurons are:
a) Dendritesq b) Ganglia c) Axons d) None of them
Correct Answer
Ganglia
123. Which is responsible to sense the touch?
a) Free nerve endings b) Meissner's corpuscles c) Pacini corpuscles d) None of them
Correct Answer
Meissner's corpuscles
124. In female grasshoppers, the number of chromosomes is:
a) 11 b) 24 c) 12 d) 19
Correct Answer
24
125. An X-linked recessive trait in which both red and green cone cells are absent is:
a) Red cone monochromacy b) Blue cone monochromacy c) Green cone monochromacy d) None of them
Correct Answer
Blue cone monochromacy
126. The study of human populations and things that affect them is:
a) Sociobiology b) Environmental biology c) Biogeography d) Demography
Correct Answer
Demography
127. The ratio of each joint phenotypic combination can be obtained by ______the probabilities of individual phenotypes.
a) Subtracting b) Adding c) Myltiplying d) Dividing
Correct Answer
Multiplying
128. An example of a short-day plant is:
a) Cocklebur b) Soyabean c) Tobacco d) All of them
Correct Answer
All of them
129. Cramp is also known as:
a) Tetany b) Muscle fatigue c) Tetanic contraction d) All of them
Correct Answer
Tetanic contraction
130. Genes can be isolated from the chromosomes by cutting the chromosomes on the_______of the gene.
a) Centered site b) Flanking sites c) Above d) Below
Correct Answer
Flanking sites
131. Homozygous dominants are represented with a
a)
Capital letter
b) Roman numeral c)
Lower case letter
d) None of them
Correct Answer
Capital letter
132. Combined the biome of earth together form the:
a) Biosphere b) Lithosphere c) Planetary community d) Planetary ecosystem
Correct Answer
Planetary ecosystem
133. What is the probability fo round & green in dihybrid cross of pea plant?
a) 9 b) 3 c) 1 d) 4
Correct Answer
3
134. Mendel called the trait that appeared in as:
a) Dominant b) Recessive c) Codominant d) None of them
Correct Answer
Dominant
135. The location of Grassland ecosystem in Pakistan is:
a) Yazman b) North Kallat c) Swat d) Both a & c
Correct Answer
North Kallat
136. Amphibians wriggle along the belly on the ground, with the help of____________.
a) Unsegmentally arranged
scales
b) Unsegmentally arranged
muscles
c) Segmentally arranged
scales
d) Segmentally arranged
muscles
Correct Answer
Segmentally arranged muscles
137. The example of X-linked dominant trait is:
a) Hypophosphatemic b) Colour blindness c) Vitamin D resistant rickets d) Both a & c
Correct Answer
Both a & c
138. Hormones trigger heat production as do thyroid hormones and are termed as:
a) Shivering thermogenesis b) non-shivering thermogenesis c) Static thermogenesis d)
Both a & b
Correct Answer
Non-shivering thermogenesis
139. Maximum average rainfall in Grassland ecosystem is:
a) 450 mm b) 750 mm c) 1500 mm d) 1800 mm
Correct Answer
750 mm
140. Organisms within the biosphere not only adapt themselves to the environment but also interact:
a) To modify chemical conditions of the
biosphere.
b) To modify physical conditions of the
biosphere.
c) Both a & b
d) None of them
Correct Answer
Both a & b
141. At__________, the rate of growth stops and the plant may die.
a) 0-35 b) 25-30 c) 05-10 d) 35-40
Correct Answer
35-40
142. Example of mammal found in coniferous forests is:
a) Bison b) Wolf c) Deer d) All of them
Correct Answer
All of them
143. The upper layer of earth's crust is:
a) Agnious b) Soil c) Land d) None of them
Correct Answer
Soil
144. The mode of locomotion in cockroach is swift:
a) Jumping b) Walking c) Crawling d) None of them
Correct Answer
Walking
145. The lateral plate mesoderm is split into ___________ sheet-like layers.
a) 2 b) 3 c) 4 d) 5
Correct Answer
2
146. The study od the relationships of organisms to their environment is known as:
a) Biology b) Ecology c) Mycology d) Zoology
Correct Answer
Ecology
147. Hybridization, followed by___________of the mature plants generated a large number of identical plants with these traits.
a) Cloning b) Vegetative propagation c) Tissue culture, d) None of them
Correct Answer
Vegetative propagation
148. In a nucleotide, nitrogen base is attached to carbon ________ of a pentose sugar.
a) 1 b) 2 c) 3 d) 5
Correct Answer
1
149. Which pair is not sex chromosomes in humans?
a) 10 b) 12 c) 19 d) All of them
Correct Answer
10
150. Diphtheria is the example of______disorder.
a) Genetic b) Physical c) Pathogenic d) Chemical
Correct Answer
Pathogenic
151. Which one of these supply energy to growing plants?
a) Salts b) Nutrients c) Both a & b d) None of them
Correct Answer
Nutrients
152. Panting occurs in:
a) Lizards b) Frogs c) Dogs d) All of them
Correct Answer
Dogs
153. A sequence of about 10 RNA nucleotide is:
a) mRNA b) DNA template c) Primer d) Okazaki fragment
Correct Answer
Primer
154. Air is being polluted rapidly due to:
a) Industrilization b) Automobiles c) Both a & b d) None of them
Correct Answer
Both a & b
155. __________is the largest ecosystem oon earth.
a) Indus river b) Lower canals c) Salt-water ocean d) All of them
Correct Answer
Salt-water ocean
156. The whole process of formation of the nervous system is called:
a) Gastrulation b) Neurulation c) Nervolation d) None of them
Correct Answer
Neurulation
157. The chromosomal theory of inheritance was first formulated in:
a) 1802 b) 1902 c) 1909 d) 1920
Correct Answer
1902
158. Pyrogens displace the set point above the normal point each
a) 34 b) 35 c) 36 d) 37
Correct Answer
37
159. Which of the following traits is transmitted directly from an affected father to only his sons?
a) Autosomal b) X-linked c) Y-linked d) X & Y linked
Correct Answer
Y-linked
160. Protein assists in the binding of tRNA to the exposed mRNA codon at _______site.
a) A b) B c) P d) E
Correct Answer
A
161. Tritanopia is a_______blindness.
a) Blue b) Red c) Purple, d) Green
Correct Answer
Blue
162. In adult man the parathyroids are found embedded in the posterior part of the lateral lobes of the:
a) Pituitary b) Pancreas c) Thyroid d) Both b & c
Correct Answer
Thyroid
163. Haemophilia ____ is non-allelic recessive sex-linked.
a) HAEMOPHILIA ,A b) HAEMOPHILIA B c) C d) Both a & b
Correct Answer
Both a & b
164. Rodents are the example of:
a) Digitigrade b) Plantigrade c) Unguligrade d) None of them
Correct Answer
Digitigrade
165.
Germ cells in the ovary produce many:
a) Zoospores b) Oogonia c) Zygospores d) None of them
Correct Answer
Oogonia
166. Prolactin is the other name of:
a) LH b) LTH c) ICSH d) TSH
Correct Answer
LTH
167. Gottlieb Haberlandt was:
a) Microbiologist b) Embryologist c) Zoologist d) Botanist
Correct Answer
Botanist
168. In the case of Drosophila, females are:
a) Homozygous b) Hemizygous c) Heterozygous d) Both a & c
Correct Answer
Both a & c
169. Source of oxide of nitrogen is:
a) Combustion of leaded oil b) Air conditioning system c) Burning of fossil fuels d) All of them
Correct Answer
Burning of fossil fuels
170. Frogs and toad, also walk and hop on land due to strong:
a) Head b) Hindlimbs c) Forelimbs d) Both a & c
Correct Answer
Hindlimbs
171. Neurospora spores were exposed to__________ in Beadle and Tatum experiment.
a) -rays b) -rays c) -rays d) None of them
Correct Answer
-rays
172. About _____water is in the form of frozen ice-caps.
a) 97% b) 19% c) 2% d) 1%
Correct Answer
2%
173. There are _________different amino acid that commonly occur in proteins.
a) 10 b) 20 c) 30 d) 45
Correct Answer
20
174. ______is the commercially available compound that is the source of ethene.
a) GA b) GA c) Ethene dichloride d) Ethephon
Correct Answer
Ethephon
175. The prokaryotes may have arisen more than ______ years ago.
a) 5.3 million b) 5.3 billion c) 3.5 million d) 3.5 billion
Correct Answer
3.5 billion
176. The freshwater ecosystem on earth covers less than _________ of its surface. .
a) 71% b) 41% c) 21% d) 1%
Correct Answer
1%
177. Chemoreceptors are not for:
a) Amino acid b) Pressure c) Taste,d) Both b & c
Correct Answer
Pressure
178. Who discovered DNA?
a) Mendel b) Avery c) F.Griffith d) F.Miescher
Correct Answer
F.Miescher
179. Oleic acid is a:
a) Fatty acid b) Glycogen form c) Saturated amino acid d) Monounsaturated fatty acid
Correct Answer
Monounsaturated fatty acid
180. It takes place in diploid cells only.
a) Mitosis b) Meiosis c) Regeneration d) Budding
Correct Answer
Meiosis
181. The ozone layer has also been found to decrease over ___________.
a) Antarctica b) Arctic regions c) Both a & b d) None of them
Correct Answer
Arctic regions
182. ________inhibits the secretion of FSH during menstrual cycle.
a) LTH b) STH c) TSH d) Estrogen
Correct Answer
Estrogen
183. Point of interchange is:
a) Centromere b) Kinetochore c) Chiasmata d) Heads of chromosomes
Correct Answer
Chiasmata
184. Chromosomes were first observed by:
a) Carolus Linnaeus b) Griffith c) Watson d) Fleming
Correct Answer
Fleming
185. Meiosis takes place usually at the time of:
a) Gamete formation b) During cloning c) Spore formation d) Both a & c
Correct Answer
Gamete formation
186. An antibody made by soybeans can be used as a treatment for:
a) Herpes simplex b) Genital herpes c) AIDS d) None of them
Correct Answer
Genital herpes
187. An example of a day-neutral plant is:
a) Soyabean b) Tomato c) Strawberry d) Both a & b
Correct Answer
Tomato
188. Digestive tract has ________muscles.
a) Skeletal b) Cardiac c) Smooth d) None of them
Correct Answer
Smooth
189. The frequency of abortions of Turner's syndrome is about:
a) 1/40 b) 1/200 c) 1/33 d) 1/18
Correct Answer
1/18
190. The % composition of protein in chromosomes is:
a) 20 b) 40 c) 60 d) 80
Correct Answer
60
191. Genes can be mapped on a chromosome on the basis of their__________________.
a) Cross over frequencies b) Recombination frequencies c) Both a & b d) None of them
Correct Answer
Both a & b
192. Modern synthesis is the other name for:
a) Natural selection b) Artificial selection c) Neo-Darwinism d) Special creation
Correct Answer
Neo-Darwinism
193. A tidal power station consists of a long barrier called a:
a) Tidal stopper b) Tidal barrier c) Tidal barrage, d) Tidal carriage
Correct Answer
Tidal barrage
194. Which does not specifies any antigen?
a) b) c) d) Both a & b
Correct Answer
195. Arthritis covers over ____different types of inflammatory degenerative diseases.
a) 10 b) 40 c) 100 d) 10000
Correct Answer
100
196. The life span of Lyell is:
a) 1766-1834 b) 1769-1832 c) 1797-1875 d) None of them
Correct Answer
1797-1875
197. Brachioradialis causes the uplift of:
a) Radius b) Ulna c) Humerus d) Both a & b
Correct Answer
Both a & b
198. In microcephaly, the individual is born with:
a) Big skull b) Small skull c) Big hands d) Long arms
Correct Answer
Small skull
199. In Morgan's experiment when males and females of generation mate with each other and produced generation, the
the number of red-eyed males was:
a) 2059 b) 2459 c) 782 d) 1101
Correct Answer
1101
200. Which of the following is called as excretophore i.e contributing mainly to the elimination of wastes in plants?
a) Stem b) Roots c) Flowers d) Leaves
Correct Answer
Leaves
201. Peat is an example of:
a) Renewable resource b) Non-renewable resource c) Both a & b d) None of them
Correct Answer
Non-renewable resource
202. Any variation that can help an organism survive in its environment is called a
a) Adaptation b) Characteristic c) Vestigial structure d) All of them
Correct Answer
Adaptation
203. Growth is a/an____________ process.
a) Reversible b) Irreversible c) Non-spontaneous d) None of them
Correct Answer
Irreversible
204. The generation of wastes is primarily done at the metabolic level and are called:
a) Catabolic wastes b) Anabolic wastes c) Metabolic waste, d) All of them
Correct Answer
Metabolic waste
205. If all members of a population are homozygous for the same allele, that allele is said to be:
a) Jumping genes b) Multiple allele c) Fixed in the gene d) None of them
Correct Answer
Fixed in the gene
206. Blood pressure is an example of:
a) Simple disorder b) Monogenetic trait c) Multifactorial trait d) Common trait
Correct Answer
Multifactorial trait
207. Both plants and animals need support against:
a) Growth b) There size c) Gravity d) All of them
Correct Answer
Gravity
208. An example of an herbicide-resistant plant is:
a) Sugar beets b) Canola c) Wheat d) All of them
Correct Answer
All of them
209. The blastula is characterized by the presence of a:
a) Blastocoele b) Segmentation cavity c) Both a & b d) None of them
Correct Answer
Both a & b
210. Associative neurons are the neurons which occur exclusively in the:
a) Brain b) Spinal cord c) Notochord d) Both a & b
Correct Answer
Both a & b
211. Smooth muscles are long and contain:
a) Single nuclei b) Two nucleic c) Polynuclear d) None of them
Correct Answer
Single nuclei
212. Carbohydrates after metabolizing maybe the source of:
a) Water b) Energy c) Carbon dioxide d) All of them
Correct Answer
All of them
213. Establishment of new forests where no forests existed previously is:
a) Deforestation b) Reforestation c) Afforestation d) Afforestation
Correct Answer
Afforestation
214. Founder of classical genetics was:
a) Mendlive b) Mendel c) Moshe d) Morgan
Correct Answer
Mendel
215. Estrogen replacement therapy is the treatment for:
a) Osteoarthritis b) Osteoporosis c) Osteomalacia d) Both b & c
Correct Answer
Osteoporosis
216. ________is the form in which most nitrogen moves from the soil into the roots.
a)NITROGEN b) Nitrite c) Nitrate, d)NOTHING
Correct Answer
Nitrate
217. When the apical bud was removed, the growth in the lower buds was:
a) Promoted b) Inhibited c) First inhibited than promoted d) None of them
Correct Answer
Inhibited
218. An "O" recipient can only be given transfusion from a donor:
a) A b) B c) AB d) O
Correct Answer
O
219. _____stage is short-lived.
a) Morula b) Blastula c) Gastrulation d) None of them
Correct Answer
Morula
220. Naturally engineered bacteria do an even better job of cleaning up beaches after:
a) Milk spills b) Oil spills c) Urine spills d) None of them
Correct Answer
Oil spills
221.
Types of plankton are:
a) 2 b) 3 c) 4 d) 5
Correct Answer
2
222. Hyperoxaluria is:
a) Lower blood level of oxalates b) Higher blood level of oxalates c) Higher blood level of calcium d) None of them
Correct Answer
The higher blood level of oxalates
223. Clear cytoplasm of ascidian's fertilized egg produces:
a) Gut b) Muscle cells c) Notochord d) Larval epidermis
Correct Answer
Larval epidermis
224. The category of the plants that have adaptations of small and thick leaves to limit water loss is called:
a) Hydrophytes b) Xerophytes c) Mesophytes d) None of them
Correct Answer
Xerophytes
225. Sliding Filament Model was suggested by:
a) H.Huxley b) A.F Huxley & Colleagues c) Bradford d) Both a & b
Correct Answer
Both a & b
226. In cats the dominant allele W not only makes fur pure white but also causes:
a) Brown color b) Tallness c) Deafness d) All of them
Correct Answer
Deafness
227. The genetically engineered virus was sprayed on tobacco plants to produce antigens to treat:
a) Klinefelter's syndrome b) Huntington's disease c) SCID d) Non-Hodgkin's lymphoma
Correct Answer
Non-Hodgkin's lymphoma
228. Any smooth surface which moves through the air at an angle to the air-stream is:
a) Aerofoil b) Curvature c) Both a & b d) None of them
Correct Answer
Aerofoil
229. In Pakistan ______is declared extinct.
a) Houbara bustard b) Marbled teal c) Tiger d) Both a & c
Correct Answer
Tiger
230. Darwin was born in:
a) 1908 b) 1819 c) 1809 d) 1909
Correct Answer
1809
231. Minimum average rain fall in Temperate Deciduous Forests is_______________
a) 400 mm b) 550 mm c) 750 mm d) 1500 mm
Correct Answer
750 mm
232. Who studied the genetics of wheat grain color?
a) Carl Correns b) Nelson-Stahl c) Nilsson-Ehle d) Mendal
Correct Answer
Nilsson-Ehle
233. Batteries store which type of energy?
a) Electrical b) Mechanical c) Chemical d) Nuclear
Correct Answer
Chemical
234. Haemophilia B is:
a) Allelic recessive sexlinked
b) Non-allelic dominant sexlinked
c) Non-allelic recessive sexlinked
d) Allelic dominant sexlinked
Correct Answer
Non-allelic recessive sex-linked
235. Which is responsible to sense the pain?
a) Free nerve endings b) Meissner's corpuscles c) Pacini corpuscles d) None of them
Correct Answer
Free nerve endings
236. An example of a common animal in Temperate Deciduous forests is:
a) Dog b) Rhesus monkey c) Lion d) None of them
Correct Answer
Rhesus monkey
237. To achieve a better living condition, it is essential to:
a) Increase food production b) Decrease expenditure c) Control the population growth d) None of them
Correct Answer
Control the population growth
238. For the generation of different sized DNA fragments, _____methods are generally used.
a) 1 b) 2 c) 3 d) 3
Correct Answer
2
239. Intelligence is also a case of polygenic inheritance which is strongly influenced by:
a) Genes b) Environment c) Nature d) None of them
Correct Answer
Environment
240. Motile antherozoids are:
a) HAPLOID b) DIPLOID c) TRIPLOID d) None of them
Correct Answer
1n
241. Nitrogen dioxide combines with water vapors to form:
a) Nitric acid b) Nitrous acid c) Sulphurous acid d) Both a & b
Correct Answer
Both a & b
242. Thomas Hunt Morgan studied fruit fly in:
a) 1900 b) 1902 c) 1910 d) 1959
Correct Answer
1910
243. The most critical phase of the mitosis is:
a) Prophase b) Metaphase c) Anaphase d) Telophase
Correct Answer
Anaphase
244. Skeleton provides:
a) Protection b) Mineral homeostasis c) Blood cell protection d) All of them
Correct Answer
All of them
245. During prophase, the chromosomes appear as thin thread having a length of:
a) b) c) d)
Correct Answer
246. Digitigrade mammals tend to walk on their:
a) Toes b) Tips of toes c) Digits d) Soles
Correct Answer
Digits
247. Ascaris incurva is a/an
a) Earthworm b) Flatworm c) Roundworm d) Fish
Correct Answer
Roundworm
248. Estrogen hormone is produces under the stimulus of_________.
a) STH b) TSH c) FSH d) None of them
Correct Answer
FSH
249. Which is a primary color?
a) Pink b) Red c) Yellow d) White
Correct Answer
Red
250. Many X-linked traits in man are also found x-linked in:
a) Chimpanzee b) Dog c) Donkey d) All of them
Correct Answer
All of them
251. A continuously varying trait is encoded by alleles in which all influencing the same trait in an:
a) Preservative way b) Additive way c) Stabilizing way d) Subtracting way
Correct Answer
Additive way
252. An individual having one missing X chromosome is:
a) Down's syndrome b) Turner syndrome c) Patau syndrome d) None of them
Correct Answer
Turner syndrome
253. Who defined latent learning as the association of indifferent stimuli or situations without a patent reward?
a) Thorndike b) Allen c) Thorpe d) None of them
Correct Answer
Thorpe
254. Fleming was examining the rapidly dividing cells of_______larvae during chromosomal discovery.
a) Reptiles b) Earthworm c) Salamander d) Butterfly
Correct Answer
Salamander
255. Crossing over occur in:
a) Leptotene b) Zygotene c) Pachytene d) Diplotene
Correct Answer
Pachytene
256. Which of the following is heterozygous?
a) RR b) rr c) Both a & b d) None of them
Correct Answer
None of them
257. In Pakistan___________ is the animal nearer to extinction.
a) Tiger b) Asian lion c) Houbara bustard d) Both a & c
Correct Answer
Houbara bustard
258. Autonomic movements have _________types.
a) 1 b) 2 c) 3 d) 4
Correct Answer
3
259. Organisms produced from a single cell by sub-culturing are called:
a) Clones b) Identical twins c) Both a & b d) None of them
Correct Answer
Clones
260. ABO system has different phenotypes on the basis of specific ___________on the surface of RBCs.
a) Antibody b) Antigen c) Anti-A antigen d) Anti-O antigen
Correct Answer
Antigen
261. The chromosomes acquire different shapes at the time of:
a) Prophase b) Metaphase c) Anaphase d) Telophase
Correct Answer
Anaphase
262. Producers like blue-green algae form a ______on lake surface.
a) Web b) Scum c) Bubbles d) Detritus
Correct Answer
Scum
263. Reptiles have more cervical vertebrae than do:
a) Birds b) Amphibians c) Fishes d) None of them
Correct Answer
Amphibians
264. In Temperate Deciduous forestes, many herbs an shrubs are with a height of:
a) 5 cm b) 5 m c) 5km d) 5mm
Correct Answer
5 m
265. The term "Ecology" was coined by:
a) Joseph b) Grinnell c) Earnst Haeckel d) Margulis
Correct Answer
Ernst Haeckel
266. There are _________base pairs in the human genome.
a) Three million b) Three billion c) Three hundred billion d) Three trillion
Correct Answer
Three billion
267. Behaviour is divided into:
a) Learned behavior b) Innate behavior c) Both a & b d) None of them
Correct Answer
Both a & b
268. ________in the male stimulates the interstitial cells of the testis to secrete testosterone.
a) ICSH b) FSH c) PIH d) None of them
Correct Answer
ICSH
269. Who introduced the binomial nomenclature for naming species?
a) Lamarck b) Virchow c) Linnaeus d) Darwin
Correct Answer
Linnaeus
270. The ______enzyme constructs RNA primer.
a) RNA polymerase b) Ligase c) Primase d) Helicase
Correct Answer
Primase
271. Who performed experiments and showed that apical dominance was caused by auxin diffusing?
a) Skoog b) Alois c) Thimann d) Both a & c
Correct Answer
Both a & c
272. The life span of Lamarck is:
a) 1707-1829 b) 1744-1798 c) 1744-1829 d) 1769-1833
Correct Answer
1744-1829
273. An example of macronutrient is:
a) N b) P c) Zn d) Both a & b
Correct Answer
Both a & b
274. An example of a dominant plant in Temperate Deciduous forests is:
a) Picea smithiana b) Deodara c) Berberis Lycium d) Both a & c
Correct Answer
Berberis Lycium
275. ___________meristems which are of temporary nature.
a) Lateral b) Intercalary c) Apical d) None of them
Correct Answer
Intercalary
276. Potassium ions are ________times higher inside than outside in resting membrane potential.
a) 10 b) 20 c) 30 d) 40
Correct Answer
20
277. A team of Japanese scientists is working on introducing the C4 cycle into:
a) Wheat b) Corn c) Rice d) All of them
Correct Answer
Rice
278. The simplest form of learning is:
a) Latent learning b) Imprinting c) Insight Learning d) Habituation
Correct Answer
Habituation
279. During gastrulation, the blastoderms splits into________layers.
a) 1 b) 2 c) 3 d) 4
Correct Answer
2
280. There are__________ elements of nervous system which help in coordination.
a) 1 b) 2 c) 3 d) 4
Correct Answer
3
281. Edward's syndrome occurs in:
a) Male b) Female c) Both a & b d) None of them
Correct Answer
Both a & b
282. In the plantigrade mode of locomotion, the mammals used to walk on their:
a) Toes b) Belly c) Digits d) Soles
Correct Answer
Soles
283. Rainfall in desert ecosystem is less than__________or not at all.
a) 10-25 cm b) 25-50 cm c) 50-75 cm d) 25-50 mm
Correct Answer
25-50 cm
284. Spermatids are:
a) haploid b) 2n, diploid c) 3n, triploid d) None of them
Correct Answer
1n
285. If we study the interaction between different genes occupying different loci, it will be?
a) Multiple Alleles b) Pleiotropy c) Epistasis d) Both b & c
Correct Answer
Epistasis
286. Who first proposed the term "Niche"?
a) Earnst Haeckel b) Charles Eltan c) Joseph Gobind d) Joseph Grinnell
Correct Answer
Joseph Grinnell
287. Numerous human activities have detrimental effects on natural ___________ sinks
a) Hydrogen b) Nitrogen c) Carbon d) Copper
Correct Answer
Carbon
288. The first evidence of the hereditary nature of DNA was provided by
a) Karl Correns b) Morgan c) Griffith d) Sutton
Correct Answer
Griffith
289. Polyhydroxy-butyrate is biodegradable:
a) Iron b) Plastic c) Rubber d) Steel
Correct Answer
Plastic
290. The theory of evolution was published by:
a) Darwin b) Wallace c) Lamarck d) Lyell
Correct Answer
Lamarck
291. A heterozygote offspring quantitatively exceeds the phenotypic expression of both the homozygote parents due to:
a) Incomplete dominance b) Codominance c) Dominance d) Over dominance
Correct Answer
Over dominance
292. In Drosophila, an X: A ratio of 1.00 or higher produces:
a) Female b) Male c) Intersex d) None of them
Correct Answer
Female
293. Most of the major organs are formed by the ______of pregnancy.
a) 3rd-month b) 12th weeks c)
1st month
d) Both a & b
Correct Answer
Both a & b
294. Light influences growth in ________ways.
a) 1 b) 2 c) 3 d) 4
Correct Answer
3
295. The population of Pakistan was _________at the time of independence in 1947.
a) 13.5 billion b) 32.5 billion c) 23.5 million d) 32.5 million
Correct Answer
32.5 million
296. DNA duplex is coiled around a core of _______histone proteins.
a) 4 b) 6 c) 8 d) None of them
Correct Answer
8
297. Mongolism is the other name of:
a) Jacobs syndrome b) Turner's syndrome c) Patau syndrome d) Down's syndrome
Correct Answer
Down's syndrome
298. Rain is a ____________energy source.
a) Renewable b) Non-renewable c) Both a & b d) None of them
Correct Answer
Renewable
299. Sickle cell anemia, leukemia, and albinism make linkage group on human chromosome number:
a) 1 b) 10 c) 11 d) 9
Correct Answer
11
300. Coconut milk is a source of:
a) Oil b) Auxin c) Cytokinin d) Gibberellins
Correct Answer
Cytokinin
301. Spemann worked on the development of _______ zygote.
a) Sea urchin's b) Salamander's c) Platyhelminthes'd) All of them
Correct Answer
Salamander's
302. The external genitalia of a human male consists of a pair of testes which lie outside the body, in the sac-like
a) Marsupium b) Bag c) Scrotum d) None of them
Correct Answer
Scrotum
303. The major factors that determine the quantity and type of life in the aquatic ecosystem are:
a) Energy b) Air c) Nutrient d) Both a & c
Correct Answer
Both a & c
304. Who gave the theory of natural selection similar to Darwin's work?
a) Lyell b) Lyne Margulis c) Wallace d) Lamarck
Correct Answer
Wallace
305. _______cells of the immune system attack the pancreas and destroy insulin-producing cells.
a) A b) B c) T d) S
Correct Answer
T
306. Stabbing pain is the characteristic of:
a) Disc-slip b) Spondylosis c) Arithritis d) Sciatica
Correct Answer
Sciatica
307. Ozone of atmosphere extending from __________above earth.
a) 5-10 km b) 10-50 m c) 10-50 km d) 50-89 km
Correct Answer
10-50 km
308. _______promote flowering in short day plants.
a) Cytokinins b) Gibberellins c) Abscisic acid d) Both b & c
Correct Answer
Abscisic acid
309. Joseph Grinnell was _______scientist.
a) German b) British c) American d) Persian
Correct Answer
American
310. Antidiuretic hormone is also called:
a) Prolactin b) Vasopressin c) Oxytocin d) None of them
Correct Answer
Vasopressin
311. ADA is an enzyme that is a lack in children of having:
a) AIDS b) SCID c) Turner's syndrome d) Down's syndrome
Correct Answer
SCID
312. mRNA is synthesized by:
a) DNA polymerase b) RNA polymerase c) RNA ligase d) None of above
Correct Answer
RNA polymerase
313. Cold receptors are nearly _______times more abundant than heat or temperature receptor.
a) 1.0 b) 10 c) 27 d) 17
Correct Answer
10
314. _____________is the major killer in developing countries.
a) Muscle Fatigue b) Tetany c) Tetanus d) Cramp
Correct Answer
Tetanus
315. Cyanobacteria are found in:
a) Limnetic zone b) Profundal c) Both a & b d) None of them
Correct Answer
Limnetic zone
316. Several automatic functions, such as breathing, heart rate, blood pressure, and swallowing are controlled by:
a) Cerebrum b) Pons c) Thalamus d) None of them
Correct Answer
None of them
317. Calcitonin is antagonistic to__________.
a) ADH b) STH c) ACTH d) Parathormone
Correct Answer
Parathormone
318. In ________, Morgan was awarded a Nobel Prize for his contributions to genetics.
a) 1903 b) 1913 c) 1923 d) 1933
Correct Answer
1933
319. Calcium oxalate type stones are _________of all the kidney stones.
a) 50% b) 70% c) 79% d) 88%
Correct Answer
70%
320. In Morgan's experiment when males and females of generation mate with each other and produced generation, the
a number of white-eyed males were:
a) 2259 b) 1101 c) 782 d) 988
Correct Answer
782
321. The first restriction enzyme was isolated at:
a) California University b) Celera University c) John Hopkins University d) TI Institute of Medical Sciences, Germany
Correct Answer
John Hopkins University
322. The major unit of ecology is the:
a) Environment b) Species c) Community d) Ecosystem
Correct Answer
Ecosystem
323. Heat producing animals at a low level and absorb heat from their surroundings are:
a) Endotherms b) Ectotherms c) Heterotherms d) Both a & c
Correct Answer
Ectotherms
324. Among the scientists who believed in divine creation was:
a) Lamarck b) Darwin c) Wallace d) Margulis
Correct Answer
Wallace
325. Enzyme having a supporting role in DNA replication is:
a) DNA Polymerase I b) DNA Polymerase II c) DNA Polymerase III d) None of them
Correct Answer
DNA Polymerase I
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