BIOLOGY -PAGE 7
1. Which one of the following characteristics is not shared by birds and mammals ?
(1) Viviparity
(2) Warm blooded nature
(3) Ossified endoskeleton
(4) Breathing using lungs
Ans: 1
2. Emerson's enhancement effect and Red drop have been instrumental in the discovery of :
(1) Photophosphorylation and cyclic electron transport
(2) Oxidative phosphorylation
(3) Photophosphorylation and non-cyclic electron transport
(4) Two photosystems operating simultaneously
Ans: 4
3. In which of the following, all three are macronutrients ?
(1) Molybdenum, magnesium, manganese
(2) Nitrogen, nickel, phosphorus
(3) Boron, zinc, manganese
(4) Iron, copper, molybdenum
Ans: 9
4. Changes in GnRH pulse frequency in females is controlled by circulating levels of :
(1) progesterone only
(2) progesterone and inhibin
(3) estrogen and progesterone
(4) estrogen and inhibin
Ans: 3
5. The coconut water from tender coconut represents :
(1) Free nuclear proembryo (2) Free nuclear endosperm
(3) Endocarp (4) Fleshy mesocarp
Ans: 2
6. Which of the following guards the opening of hepatopancreatic duct into the duodenum ?
(1) Pyloric sphincter (2) Sphincter of Oddi (3) Semilunar valve (4) Ileocaecal valve
Ans: 2
7. Which one of the following is the starter codon ?
(1) UAA (2) UAG (3) AUG (4) UGA
Ans: 3
8. Spindle fibres attach on to :
(1) Centromere of the chromosome (2) Kinetosomeofthe chromosome
(3) Telomere of the chromosome (4) Kinetochore of the chromosome
Ans: 4
9. A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F1 plants were selfed the resulting genotypes were in the ratio of :
(1) 3 :1 ::Tall :Dwarf
(2) 3 :1 ::Dwarf :Tall
(3) 1 :2 :1 ::Tall homozygous : Tall heterozygous :Dwarf
(4) 1 :2 :1 ::Tall heterozygous :Tall homozygous :Dwarf
Ans: 3
10. A typical fat molecule is made up of :
(1) One glycerol and one fatty acid molecule
(2) Three glycerol and three fatty acid molecules
(3) Three glycerol molecules and one fatty acid molecule
(4) One glycerol and three fatty acid molecules
Ans: 4
11. A system of rotating crops with legume or grass to improve soil structure and fertility is called :
(1) Strip farming
(2) Shifting agriculture
(3) Ley farming
(4) Contour farming
Ans: 3
12. Which of the following is not a stem modification ?
(1) Tendrils of cucumber
(2) Flattened structures of Opuntia
(3) Pitcher of Nepenthes
(4) Thorns of citrus
Ans: 3
13. Which of the following features is not present in Periplaneta americana ?
(1) Exoskeleton composed of N-acetylglucosamine
(2) Metamerically segmented body
(3) Schizocoelom as body cavity
(4) Indeterminate and radial cleavage during embryonic development
Ans: 4
14. Name the chronic respiratory disorder caused mainly by cigarette smoking :
(1) Respiratory acidosis
(2) Respiratory alkalosis
(3) Emphysema
(4) Asthma
Ans: 3
(1) Viviparity
(2) Warm blooded nature
(3) Ossified endoskeleton
(4) Breathing using lungs
Ans: 1
2. Emerson's enhancement effect and Red drop have been instrumental in the discovery of :
(1) Photophosphorylation and cyclic electron transport
(2) Oxidative phosphorylation
(3) Photophosphorylation and non-cyclic electron transport
(4) Two photosystems operating simultaneously
Ans: 4
3. In which of the following, all three are macronutrients ?
(1) Molybdenum, magnesium, manganese
(2) Nitrogen, nickel, phosphorus
(3) Boron, zinc, manganese
(4) Iron, copper, molybdenum
Ans: 9
4. Changes in GnRH pulse frequency in females is controlled by circulating levels of :
(1) progesterone only
(2) progesterone and inhibin
(3) estrogen and progesterone
(4) estrogen and inhibin
Ans: 3
5. The coconut water from tender coconut represents :
(1) Free nuclear proembryo (2) Free nuclear endosperm
(3) Endocarp (4) Fleshy mesocarp
Ans: 2
6. Which of the following guards the opening of hepatopancreatic duct into the duodenum ?
(1) Pyloric sphincter (2) Sphincter of Oddi (3) Semilunar valve (4) Ileocaecal valve
Ans: 2
7. Which one of the following is the starter codon ?
(1) UAA (2) UAG (3) AUG (4) UGA
Ans: 3
8. Spindle fibres attach on to :
(1) Centromere of the chromosome (2) Kinetosomeofthe chromosome
(3) Telomere of the chromosome (4) Kinetochore of the chromosome
Ans: 4
9. A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the F1 plants were selfed the resulting genotypes were in the ratio of :
(1) 3 :1 ::Tall :Dwarf
(2) 3 :1 ::Dwarf :Tall
(3) 1 :2 :1 ::Tall homozygous : Tall heterozygous :Dwarf
(4) 1 :2 :1 ::Tall heterozygous :Tall homozygous :Dwarf
Ans: 3
10. A typical fat molecule is made up of :
(1) One glycerol and one fatty acid molecule
(2) Three glycerol and three fatty acid molecules
(3) Three glycerol molecules and one fatty acid molecule
(4) One glycerol and three fatty acid molecules
Ans: 4
11. A system of rotating crops with legume or grass to improve soil structure and fertility is called :
(1) Strip farming
(2) Shifting agriculture
(3) Ley farming
(4) Contour farming
Ans: 3
12. Which of the following is not a stem modification ?
(1) Tendrils of cucumber
(2) Flattened structures of Opuntia
(3) Pitcher of Nepenthes
(4) Thorns of citrus
Ans: 3
13. Which of the following features is not present in Periplaneta americana ?
(1) Exoskeleton composed of N-acetylglucosamine
(2) Metamerically segmented body
(3) Schizocoelom as body cavity
(4) Indeterminate and radial cleavage during embryonic development
Ans: 4
14. Name the chronic respiratory disorder caused mainly by cigarette smoking :
(1) Respiratory acidosis
(2) Respiratory alkalosis
(3) Emphysema
(4) Asthma
Ans: 3
15. Which one of the following statements is not true ?
(1) Pollen grains of many species cause severeallergies
(2) Stored pollen in liquid nitrogen can be used in the crop breeding programmes
(3) Tapetum helps in the dehiscence of anther
(4) Exine of pollen grains is made up of sporopollenin
Ans: 3
16. Which of the following is required is inducer(s)for the expression of Lac operon ?
(1) lactose
(2) lactose and galactose
(3) glucose
(4) galactose
Ans: 1
17. Mitochondria and chloroplast are :
(a) semi-autonomous organelles.
(b) formed by division of pre -existing organelles and they contain DNA but lack protein synthesizing machinery
Which one of the following options is correct ?
(1) (a)is true but b is false.
(2) Both (a) and (b)are false.
(3) Both (a)and b are correct.
(4) b is true but (a) is false.
Ans: 1
18. It is much easier for a small animal to run uphill than for a large animal, because :
(1) Small animals have a lower O2 requirement.
(2) The efficiency of muscles in large animals is less than in the small animals.
(3) It is easier to carry a small body weight.
(4) Smaller animals have a higher metabolic rate.
Ans: 4
19. Seed formation without fertilization in flowering plants involves the process of :
(1) Somatichybridization (2) Apomixis (3) Sporulation (4) Budding
Ans: 2
20. The Avena curvatureis used for bioassay
(1) IAA
(2) Ethylene
(3) ABA
(4) GA3
Ans: 1
21. A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilisation. In which of the following physiological groups would you assign this plant ?
(1) CAM
(2) Nitrogen fixer
(3) C3
(4) C4
Ans: 4
22. Which is the National Aquatic Animal of India?
(1) Blue whale
(2) Sea -horse
(3) Gangetic shark
(4) River dolphin
Ans: 4
23. Which of the following is not a feature of the plasmids ?
(1) Transferable
(2) Single-stranded
(3) Independent replication
(4) Circular structure
Ans: 2
24. The amino acid Tryptophan is the precursor for the synthesis of :
(1) Estrogen and Progesterone
(2) Cortisol and Cortisone
(3) Melatonin and Serotonin
(4) Thyroxine and Triiodothyronine
Ans: 3
25. Joint Forest Management Concept was introduced in India during
(1) 1980
(2) 1990
(3) 1960
(4) 1970
Ans: 1
26. Water soluble pigments found in plant cell vacuoles are :
(1) Carotenoids
(2) Anthocyanins
(3) Xanthophylls
(4) Chlorophylls
Ans: 2
27. Which one of the following is a characteristic feature of cropland ecosystem ?
(1) Absence of weeds
(2) Ecological succession
(3) Absence of soil organisms
(4) Least genetic diversity
Ans: 4
28. Antivenom injection contains preformed antibodies while polio drops that are administered into the body contain :
(1) Gamma globulin (2) Attenuated pathogens (3) Activated pathogens (4) Harvested antibodies
Ans: 2
29. When does the growth rate of a population following go, the logistic model equal zero ?
The logistic model is given as dN/dt = rN(1-N/K) :
(1) when N/K equals zero.
(2) when death rate is greater than birth rate.
(3) when N/K is exactly one.
(4) when N nears the carrying capaciq of the habitat.
Ans: 3
30. Which one of the following statements is wrong ?
(1) Uracil is a pyrimidine.
(2) Glycine is a sulphur containing amino acid.
(3) Sucrose is a disaccharide.
(4) Cellulose is a polysaccharide.
Ans: 2
31. The taq polymerase enzyme is obtained from :
(1) Bacillus subtilis
(2) Pseudomonas putida
(3) Thermus aquaticus
(4) Thiobacillus ferroxidans
Ans: 3
32. Gause's principle of competitive exclusion states that :
(1) No two species can occupy the same niche indefinitely for the same limiting resources.
(2) Larger organisms exclude smaller on.es through competition.
(3) More abundant species will exclude the less abundant species through competition.
(4) Competition for the same resources excludes species having different food preferences.
Ans: 1
33. Stems modified into flat green organs performing the functions of leaves are known as :
(1) Phylloclades
(2) Scales
(3) Cladodes
(4) Phyllodes
Ans: 1
34. Fertilization in humans is practically feasible only if:
(1) the ovum and sperms are transported simultaneously to ampullary - isthmic junction of the cervix.
(2) the sperms are transported into cervix within 48 hrs of release of ovum in uterus.
(3) the sperms are transported into vagina just after the release of ovum in fallopian tube.
(4) the ovum and sperms are transported simultaneously to ampullary - isthmic junction of the fallopian tube.
Ans: 4
35. Which of the following statements is not true for cancer cells in relation to mutations ?
(1) Mutations inactivate the cell control.
(2) Mutations inhibit production of telomerase.
(3) Mutations in proto-oncogenes accelerate the cell cycle.
(4) Mutations destroy telomerase inhibitor.
Ans: 2
36. Which of the following structures is homologus to the wing of a bird ?
(1) Hind limb of Rabbit
(2) Flipper of Whale
(3) Dorsal fin of a Shark
(4) Wing of a Moth
Ans: 2
37. Select the incorrect statement :
(1) LH and FSH decrease gradually during the follicular phase.
(2) LH triggers secretion of androgens from the Leydig cells
(3) FSH stimulates the sertoli cells which help in spermiogenesis.
(4) LH triggers ovulation in ovary.
Ans: 1
38. Which of the following is a restriction endonuclease?
(1) DNase I
(2) RNase
(3) HindII
(4) Protease
Ans: 3
39. Microtubules are the constituents of :
(1) Centrioles, Spindle fibres and Chromatin
(2) Centrosome, Nucleosome and Centrioles
(3) Cilia, Flagella and Peroxisomes
(4) Spindle fibres, Centrioles and Cilia
Ans: 4
40. Select the correct statement :
(1) Sequoia is one of the tallest trees
(2) The leaves of gymnosperms are not well adapted to extremes of climate
(3) Gymnosperms are both homosporous and heterosporous
(4) Salvinia, Ginkgo and Pinus all are gymnosperms
Ans: 1
41. In higher vertebrates, the immune system can distinguish self-cells and non-self. If this property is lost due to genetic abnormality and it attacks self-cells, then it leads to :
(1) Auto-immune disease
(2) Active immunity
(3) Allergic response
(4) Graft rejection
Ans: 1
42. In a testcross involving Fl dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates :
(1) The two genes are linked and present on the same chromosome.
(2) Both of the characters are controlled by more than one gene.
(3) The two genes are located on two different chromosomes.
(4) Chromosomes failed to separate during meiosis.
Ans: 1
43. Which of the following statements is not correct?
(1) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil.
(2) Some reptiles have also been reported as pollinators in some plant species.
(3) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.
(4) Insects that consume pollen or neck& without bringing about pollination are called pollen/nectar robbers.
Ans: 3
44. Asthma may be attributed to :
(1) inflammation of the trachea
(2) accumulation of fluid in the lungs
(3) bacterial infection of the lungs
(4) allergic reaction of the mast cells in the lungs
Ans: 4
45. In context of Amniocentesis, which of the following statement is incorrect ?
(1) It can be used for detection of Down syndrome.
(2) It can be used for detection of Cleft palate.
(3) It is usually done when a woman is between 14-16 weeks pregnant.
(4) It is used for prenatal sex determination.
Ans: 2
46. Specialised epidermal cells surrounding the guard cells are called :
(1) Bulliform cells
(2) Lenticels
(3) Complementary cells
(4) Subsidiary cells
Ans: 4
47. Which of the following is the most important cause of animals and plants being driven to extinction ?
(1) Habitat loss and fragmentation
(2) Co -extinctions
(3) Over -exploitation
(4) Alien species invasion
Ans: 1
48. Analogous structures are a result of :
(1) Shared ancestry
(2) Stabilizing selection
(3) Divergent evolution
(4) Convergent evolution
Ans: 4
49. Which of the following most appropriately describes haemophilia?
(1) Chromosomal disorder
(2) Dominant gene disorder
(3) Recessive gene disorder
(4) X -linked recessive gene disorder
Ans: 4
50. Cotyledon of maize grainis called :
(1) coleoptile (2) scutellum (3) plumule (4) coleorhiza
Ans: 2
51. The term ecosystem was coined by :
(1) E. Haeckel (2) E. Warming (3) E.P. Odum (4) A.G. Tansley
Ans: 4
52. Which of the following features is not present in the Phylum Arthropods ?
(1) Parapodia (2) Jointed appendages (3) Chitinous exoskeleton (4) Metameric segmentation
Ans: 1
53. Which one of the following cell organelles is enclosed by a single membrane ?
(1) Lysosomes
(2) Nuclei
(3) Mitochondria
(4) Chloroplasts
Ans: 1
54. Which of the following is not a characteristic feature during mitosis in somatic cells?
(1) Chromosome movement (2) Synapsis (3) Spindle fibres (4) Disappearance of nucleolus
Ans: 2
55. A river with an inflow of domestic sewage rich in organic waste may result in :
(1) An increased production of fish due to biodegradable nutrients.
(2) Death of fish due to lack of oxygen.
(3) Drying of the river very soon due to algal bloom.
(4) Increased population of aquatic food web organisms.
Ans: 2
56. Which of the following is not required for any of the techniques of DNA fingerprinting available at present ?
(1) Restriction enzymes
(2) DNA -DNA hybridization
(3) Polymerase chain reaction
(4) zinc finger analysis
Ans: 4
57. In meiosis crossing over is initiated at :
(1) Zygotene (2) Diplotene
(3) Pachytene (4) Leptotene
Ans: 3
58. Which one of the following statements is wrong ?
(1) Eubacteria are also called false bacteria.
(2) Phycomycetes are also called algal fungi.
(3) Cyanobacteria are also called blue-green algae.
(4) Golden algae are also called desmids.
Ans: 1
59. Blood pressure in the pulmonary artery is
(1) more than that in the pulmonary vein.
(2) less than that in the venae cavae.
(3) same as that in the aorta.
(4) more than that in the carotid.
Ans: 1
60. Which of the following statements is wrong for viroids ?
(1) They cause infections
(2) Their RNA is of high molecular weight
(3) They lack a protein coat
(4) They are smaller than viruses
Ans: 2
(1) Pollen grains of many species cause severeallergies
(2) Stored pollen in liquid nitrogen can be used in the crop breeding programmes
(3) Tapetum helps in the dehiscence of anther
(4) Exine of pollen grains is made up of sporopollenin
Ans: 3
16. Which of the following is required is inducer(s)for the expression of Lac operon ?
(1) lactose
(2) lactose and galactose
(3) glucose
(4) galactose
Ans: 1
17. Mitochondria and chloroplast are :
(a) semi-autonomous organelles.
(b) formed by division of pre -existing organelles and they contain DNA but lack protein synthesizing machinery
Which one of the following options is correct ?
(1) (a)is true but b is false.
(2) Both (a) and (b)are false.
(3) Both (a)and b are correct.
(4) b is true but (a) is false.
Ans: 1
18. It is much easier for a small animal to run uphill than for a large animal, because :
(1) Small animals have a lower O2 requirement.
(2) The efficiency of muscles in large animals is less than in the small animals.
(3) It is easier to carry a small body weight.
(4) Smaller animals have a higher metabolic rate.
Ans: 4
19. Seed formation without fertilization in flowering plants involves the process of :
(1) Somatichybridization (2) Apomixis (3) Sporulation (4) Budding
Ans: 2
20. The Avena curvatureis used for bioassay
(1) IAA
(2) Ethylene
(3) ABA
(4) GA3
Ans: 1
21. A plant in your garden avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilisation. In which of the following physiological groups would you assign this plant ?
(1) CAM
(2) Nitrogen fixer
(3) C3
(4) C4
Ans: 4
22. Which is the National Aquatic Animal of India?
(1) Blue whale
(2) Sea -horse
(3) Gangetic shark
(4) River dolphin
Ans: 4
23. Which of the following is not a feature of the plasmids ?
(1) Transferable
(2) Single-stranded
(3) Independent replication
(4) Circular structure
Ans: 2
24. The amino acid Tryptophan is the precursor for the synthesis of :
(1) Estrogen and Progesterone
(2) Cortisol and Cortisone
(3) Melatonin and Serotonin
(4) Thyroxine and Triiodothyronine
Ans: 3
25. Joint Forest Management Concept was introduced in India during
(1) 1980
(2) 1990
(3) 1960
(4) 1970
Ans: 1
26. Water soluble pigments found in plant cell vacuoles are :
(1) Carotenoids
(2) Anthocyanins
(3) Xanthophylls
(4) Chlorophylls
Ans: 2
27. Which one of the following is a characteristic feature of cropland ecosystem ?
(1) Absence of weeds
(2) Ecological succession
(3) Absence of soil organisms
(4) Least genetic diversity
Ans: 4
28. Antivenom injection contains preformed antibodies while polio drops that are administered into the body contain :
(1) Gamma globulin (2) Attenuated pathogens (3) Activated pathogens (4) Harvested antibodies
Ans: 2
29. When does the growth rate of a population following go, the logistic model equal zero ?
The logistic model is given as dN/dt = rN(1-N/K) :
(1) when N/K equals zero.
(2) when death rate is greater than birth rate.
(3) when N/K is exactly one.
(4) when N nears the carrying capaciq of the habitat.
Ans: 3
30. Which one of the following statements is wrong ?
(1) Uracil is a pyrimidine.
(2) Glycine is a sulphur containing amino acid.
(3) Sucrose is a disaccharide.
(4) Cellulose is a polysaccharide.
Ans: 2
31. The taq polymerase enzyme is obtained from :
(1) Bacillus subtilis
(2) Pseudomonas putida
(3) Thermus aquaticus
(4) Thiobacillus ferroxidans
Ans: 3
32. Gause's principle of competitive exclusion states that :
(1) No two species can occupy the same niche indefinitely for the same limiting resources.
(2) Larger organisms exclude smaller on.es through competition.
(3) More abundant species will exclude the less abundant species through competition.
(4) Competition for the same resources excludes species having different food preferences.
Ans: 1
33. Stems modified into flat green organs performing the functions of leaves are known as :
(1) Phylloclades
(2) Scales
(3) Cladodes
(4) Phyllodes
Ans: 1
34. Fertilization in humans is practically feasible only if:
(1) the ovum and sperms are transported simultaneously to ampullary - isthmic junction of the cervix.
(2) the sperms are transported into cervix within 48 hrs of release of ovum in uterus.
(3) the sperms are transported into vagina just after the release of ovum in fallopian tube.
(4) the ovum and sperms are transported simultaneously to ampullary - isthmic junction of the fallopian tube.
Ans: 4
35. Which of the following statements is not true for cancer cells in relation to mutations ?
(1) Mutations inactivate the cell control.
(2) Mutations inhibit production of telomerase.
(3) Mutations in proto-oncogenes accelerate the cell cycle.
(4) Mutations destroy telomerase inhibitor.
Ans: 2
36. Which of the following structures is homologus to the wing of a bird ?
(1) Hind limb of Rabbit
(2) Flipper of Whale
(3) Dorsal fin of a Shark
(4) Wing of a Moth
Ans: 2
37. Select the incorrect statement :
(1) LH and FSH decrease gradually during the follicular phase.
(2) LH triggers secretion of androgens from the Leydig cells
(3) FSH stimulates the sertoli cells which help in spermiogenesis.
(4) LH triggers ovulation in ovary.
Ans: 1
38. Which of the following is a restriction endonuclease?
(1) DNase I
(2) RNase
(3) HindII
(4) Protease
Ans: 3
39. Microtubules are the constituents of :
(1) Centrioles, Spindle fibres and Chromatin
(2) Centrosome, Nucleosome and Centrioles
(3) Cilia, Flagella and Peroxisomes
(4) Spindle fibres, Centrioles and Cilia
Ans: 4
40. Select the correct statement :
(1) Sequoia is one of the tallest trees
(2) The leaves of gymnosperms are not well adapted to extremes of climate
(3) Gymnosperms are both homosporous and heterosporous
(4) Salvinia, Ginkgo and Pinus all are gymnosperms
Ans: 1
41. In higher vertebrates, the immune system can distinguish self-cells and non-self. If this property is lost due to genetic abnormality and it attacks self-cells, then it leads to :
(1) Auto-immune disease
(2) Active immunity
(3) Allergic response
(4) Graft rejection
Ans: 1
42. In a testcross involving Fl dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates :
(1) The two genes are linked and present on the same chromosome.
(2) Both of the characters are controlled by more than one gene.
(3) The two genes are located on two different chromosomes.
(4) Chromosomes failed to separate during meiosis.
Ans: 1
43. Which of the following statements is not correct?
(1) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil.
(2) Some reptiles have also been reported as pollinators in some plant species.
(3) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.
(4) Insects that consume pollen or neck& without bringing about pollination are called pollen/nectar robbers.
Ans: 3
44. Asthma may be attributed to :
(1) inflammation of the trachea
(2) accumulation of fluid in the lungs
(3) bacterial infection of the lungs
(4) allergic reaction of the mast cells in the lungs
Ans: 4
45. In context of Amniocentesis, which of the following statement is incorrect ?
(1) It can be used for detection of Down syndrome.
(2) It can be used for detection of Cleft palate.
(3) It is usually done when a woman is between 14-16 weeks pregnant.
(4) It is used for prenatal sex determination.
Ans: 2
46. Specialised epidermal cells surrounding the guard cells are called :
(1) Bulliform cells
(2) Lenticels
(3) Complementary cells
(4) Subsidiary cells
Ans: 4
47. Which of the following is the most important cause of animals and plants being driven to extinction ?
(1) Habitat loss and fragmentation
(2) Co -extinctions
(3) Over -exploitation
(4) Alien species invasion
Ans: 1
48. Analogous structures are a result of :
(1) Shared ancestry
(2) Stabilizing selection
(3) Divergent evolution
(4) Convergent evolution
Ans: 4
49. Which of the following most appropriately describes haemophilia?
(1) Chromosomal disorder
(2) Dominant gene disorder
(3) Recessive gene disorder
(4) X -linked recessive gene disorder
Ans: 4
50. Cotyledon of maize grainis called :
(1) coleoptile (2) scutellum (3) plumule (4) coleorhiza
Ans: 2
51. The term ecosystem was coined by :
(1) E. Haeckel (2) E. Warming (3) E.P. Odum (4) A.G. Tansley
Ans: 4
52. Which of the following features is not present in the Phylum Arthropods ?
(1) Parapodia (2) Jointed appendages (3) Chitinous exoskeleton (4) Metameric segmentation
Ans: 1
53. Which one of the following cell organelles is enclosed by a single membrane ?
(1) Lysosomes
(2) Nuclei
(3) Mitochondria
(4) Chloroplasts
Ans: 1
54. Which of the following is not a characteristic feature during mitosis in somatic cells?
(1) Chromosome movement (2) Synapsis (3) Spindle fibres (4) Disappearance of nucleolus
Ans: 2
55. A river with an inflow of domestic sewage rich in organic waste may result in :
(1) An increased production of fish due to biodegradable nutrients.
(2) Death of fish due to lack of oxygen.
(3) Drying of the river very soon due to algal bloom.
(4) Increased population of aquatic food web organisms.
Ans: 2
56. Which of the following is not required for any of the techniques of DNA fingerprinting available at present ?
(1) Restriction enzymes
(2) DNA -DNA hybridization
(3) Polymerase chain reaction
(4) zinc finger analysis
Ans: 4
57. In meiosis crossing over is initiated at :
(1) Zygotene (2) Diplotene
(3) Pachytene (4) Leptotene
Ans: 3
58. Which one of the following statements is wrong ?
(1) Eubacteria are also called false bacteria.
(2) Phycomycetes are also called algal fungi.
(3) Cyanobacteria are also called blue-green algae.
(4) Golden algae are also called desmids.
Ans: 1
59. Blood pressure in the pulmonary artery is
(1) more than that in the pulmonary vein.
(2) less than that in the venae cavae.
(3) same as that in the aorta.
(4) more than that in the carotid.
Ans: 1
60. Which of the following statements is wrong for viroids ?
(1) They cause infections
(2) Their RNA is of high molecular weight
(3) They lack a protein coat
(4) They are smaller than viruses
Ans: 2
61. ‘Opah’ is a variety of :
(A) Goat (B) Frog (C) Fish (D) Cow
Ans: C
62. pH value of Sea Water
(A) 8.0 (B) 12.0 (C) 4.2 (D) 9.6
Ans: A
63. The content of ‘Blue Gas’ is
(A) Carbon Monoxide (B) Hydrogen (C) Both (A) & (B) (D) None of these
Ans: C
64. Boudoun Test check the purity of
(A) Honey (B) Ghee (C) Blood (D) All of the above
Ans: B
65. Quantum Theory initiated by
(A) Max Plank (B) Einstein (C) Christian Bernard (D) C.V. Raman
Ans: A
66. Cells discovered by
(A) Griger Mendal (B) Rutherford (C) Robert Hook (D) John Dalton
Ans: C
67. Which is the sixth taste form identified by scientist in 2015 ?
(A) Umami (B) Oleogustus (C) Umami Sweet (D) None of these
Ans: B
(A) Goat (B) Frog (C) Fish (D) Cow
Ans: C
62. pH value of Sea Water
(A) 8.0 (B) 12.0 (C) 4.2 (D) 9.6
Ans: A
63. The content of ‘Blue Gas’ is
(A) Carbon Monoxide (B) Hydrogen (C) Both (A) & (B) (D) None of these
Ans: C
64. Boudoun Test check the purity of
(A) Honey (B) Ghee (C) Blood (D) All of the above
Ans: B
65. Quantum Theory initiated by
(A) Max Plank (B) Einstein (C) Christian Bernard (D) C.V. Raman
Ans: A
66. Cells discovered by
(A) Griger Mendal (B) Rutherford (C) Robert Hook (D) John Dalton
Ans: C
67. Which is the sixth taste form identified by scientist in 2015 ?
(A) Umami (B) Oleogustus (C) Umami Sweet (D) None of these
Ans: B
68. The part of brain which help the body balance.
(A) Cerebrum (B) Cerebellum (C) Thalamus (D) Medulla oblongata
Ans: B
69. Which of the following is a water soluble Vitamin ?
(A) Calciferol (B) Tocoferol (C) Ascorbic acid (D) Phyloquinone
Ans: C
70. Choolannur Bird Sanctuary is located at (A) Palakkad (B) Idukki (C) Thrissur (D) Pathanamthitta
Ans: A
71. Water hyacinth is generally perceived as a notorious aquatic weed, but it can be a useful plant. Which of the following statements is/ are correct in this context?
1. This plant contains certain substances which can be extracted and used as medicines, herbicides and pesticides.
2. This plant can be used to remove many heavy metals like Cadmium, Lead and Mercury from water bodies.
Select the correct answer using the codes given below:
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: B
72. Which of the following organs from a brain dead person can be used as donated organs?
1. Heart
2. Kidney
3. Liver
Select the correct answer using the codes given below:
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
Ans: D
73. Which of the following can be used in biomass power plants to produce electricity?
1. Cow dung
2. Rice husk
3. Stalks of wheat
Select the correct answer using the codes given below.
(a) 1 only
(b) 2 and 3 only.
(c) 1, 2 and 3
(d) None of these can be used in biomass power plants.
Ans: C
74. In which of the following cancers is it shown initially that the disruptive micronuclei can trigger DNA damage on chromosomes and can be a potential biomarker for genetic instability
(a) Non small cell lung cancer
(b) Small cell lung cancer
(c) Breast cancer
(d) Colon cancer
Ans: A
75. Which of the following animals are found in India in their natural habitat?
1. Flying fox
2. Puma
3. Snow Leopard
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Ans: C
(A) Cerebrum (B) Cerebellum (C) Thalamus (D) Medulla oblongata
Ans: B
69. Which of the following is a water soluble Vitamin ?
(A) Calciferol (B) Tocoferol (C) Ascorbic acid (D) Phyloquinone
Ans: C
70. Choolannur Bird Sanctuary is located at (A) Palakkad (B) Idukki (C) Thrissur (D) Pathanamthitta
Ans: A
71. Water hyacinth is generally perceived as a notorious aquatic weed, but it can be a useful plant. Which of the following statements is/ are correct in this context?
1. This plant contains certain substances which can be extracted and used as medicines, herbicides and pesticides.
2. This plant can be used to remove many heavy metals like Cadmium, Lead and Mercury from water bodies.
Select the correct answer using the codes given below:
(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: B
72. Which of the following organs from a brain dead person can be used as donated organs?
1. Heart
2. Kidney
3. Liver
Select the correct answer using the codes given below:
(a) 1 only
(b) 1 and 2 only
(c) 2 and 3 only
(d) 1, 2 and 3
Ans: D
73. Which of the following can be used in biomass power plants to produce electricity?
1. Cow dung
2. Rice husk
3. Stalks of wheat
Select the correct answer using the codes given below.
(a) 1 only
(b) 2 and 3 only.
(c) 1, 2 and 3
(d) None of these can be used in biomass power plants.
Ans: C
74. In which of the following cancers is it shown initially that the disruptive micronuclei can trigger DNA damage on chromosomes and can be a potential biomarker for genetic instability
(a) Non small cell lung cancer
(b) Small cell lung cancer
(c) Breast cancer
(d) Colon cancer
Ans: A
75. Which of the following animals are found in India in their natural habitat?
1. Flying fox
2. Puma
3. Snow Leopard
Select the correct answer using the code given below:
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Ans: C
76. Linseed (ALSI) us a rich source of :
1) Vitamin C
2) Omega-3 Fatty Acid
3) Essential Amino Acids
4) Antioxidants
Ans: 2
77. The latest technique used to establish identity of a human being based on biotechnological principals is:
1) Biometrix Analysis
2) Genome sequencing
3) DNA finger printing
4) Karyotyping
Ans: 3
78. In Microwave oven, the microwave tube used is:
1) A Combination of klystron and magnetron tube
2) Kelystron Tube
3) Magnetron Tube
4) Travelling Wave tube
Ans:3
79. In fiber optics communication the signal travels in the form of:
1) Light wave
2) Radiowave
3) Mircrowave
4) Electric Wave
Ans: 1
80. The optimum sound level for human being is:
1) 90 db
2) 60 db
3) 120 db
4) 100 db
Ans: 2
81. Biodiversity day is celebrated on:
1) 29 December
2) 27 June
3) 28 February
4) 30 January
Ans: 1
82. A Bio-technique in which Ultrasonic sound is used:
1) Sonography
2) ECG
3) EEG
4) X-RAY
Ans:1
83. Daily energy required by a hard worker man is
1) 3000 Kilocalories
2) 2700 Kilocalories
3) 4000 Kilocalories
4) 6000 Kilocalories
Ans: 3
84. The Saliva helps in the digestion of :
1) Starch
2) Proteins
3) Fibres
4) Fat
Ans: 1
85. Gene is
(a) A segment of DNA (b) A segment of DNA and histone
(c) A segment of DNA, RNA and histone (d) All of the above
Ans: A
86. Thalassemia is a hereditary disease which affects
(a) Blood (b) Lungs (c) Heart (d) Kidney
Ans: A
87. Iodine is used to detect which of the following constituents of food ?
(A) Starch (B) Glucose (C) Fats (D) Protein
Ans: A
88. Who discovered Penicillin in 1928 ?
(A) Edward Jenner (B) Alexander Fleming (C) Gregor Mendel (D) Louis Pasteur
Ans: B
89. The nitrogen base which is not present in DNA is ______
(A) Adenine (B) Thymine (C) Guanine (D) Uracil
Ans: D
90. Which of the following diseases is not a bacterial disease ?
(A) Tuberculosis (B) Tetanus (C) Chicken-pox (D) Anthrax
Ans: C
91:-Pollination by bat is
A:-Hydrophily B:-Cheiropterophily C:-Malacophily D:-Entomophily
Ans: B
92:-Pisum sativum belongs to the family
A:-Solanaceae B:-Fabaceae C:-Malvaceae D:-Liliaceae
Ans: B
93:-Pyramid of number is inverted in
A:-Pond ecosystem B:-Grassland ecosystem
C:-Parasitic ecosystem D:-Fresh water ecosystem
Ans: C
94:-In which phase of cell cycle does replication of genetic material takes place ?
A:-S phase B:-`G_0` phase C:-`G_(1` phase D:-`G_2` phase
Ans: A
95:-Which among the following represents non-sense codons ?
A:-UAA B:-UAG C:-UGA D:-All of these
Ans: D
96:-The chief pigment associated with photosynthesis is
A:-Chlorophyll b B:-Chlorophyll c C:-Chlorophyll a D:-Chlorophyll d
Ans: C
97:-Hypercalcemic hormone is
A:-Thyroxine B:-Thymosin
C:-Parathyroid hormone D:-Adrenalin
Ans: C
98:-The excretory organs in cockroach is
A:-Gills B:-Malpighian tubules C:-Book gills D:-Book lungs
Ans: B
99:-Aorta arises from
A:-Right atrium B:-Left atrium C:-Right ventricle D:-Left ventricle
Ans: D
100:-The protein portion of the enzyme is
A:-Apoenzyme B:-Prosthetic group C:-Co-factor D:-Coenzyme
Ans: A
1) Vitamin C
2) Omega-3 Fatty Acid
3) Essential Amino Acids
4) Antioxidants
Ans: 2
77. The latest technique used to establish identity of a human being based on biotechnological principals is:
1) Biometrix Analysis
2) Genome sequencing
3) DNA finger printing
4) Karyotyping
Ans: 3
78. In Microwave oven, the microwave tube used is:
1) A Combination of klystron and magnetron tube
2) Kelystron Tube
3) Magnetron Tube
4) Travelling Wave tube
Ans:3
79. In fiber optics communication the signal travels in the form of:
1) Light wave
2) Radiowave
3) Mircrowave
4) Electric Wave
Ans: 1
80. The optimum sound level for human being is:
1) 90 db
2) 60 db
3) 120 db
4) 100 db
Ans: 2
81. Biodiversity day is celebrated on:
1) 29 December
2) 27 June
3) 28 February
4) 30 January
Ans: 1
82. A Bio-technique in which Ultrasonic sound is used:
1) Sonography
2) ECG
3) EEG
4) X-RAY
Ans:1
83. Daily energy required by a hard worker man is
1) 3000 Kilocalories
2) 2700 Kilocalories
3) 4000 Kilocalories
4) 6000 Kilocalories
Ans: 3
84. The Saliva helps in the digestion of :
1) Starch
2) Proteins
3) Fibres
4) Fat
Ans: 1
85. Gene is
(a) A segment of DNA (b) A segment of DNA and histone
(c) A segment of DNA, RNA and histone (d) All of the above
Ans: A
86. Thalassemia is a hereditary disease which affects
(a) Blood (b) Lungs (c) Heart (d) Kidney
Ans: A
87. Iodine is used to detect which of the following constituents of food ?
(A) Starch (B) Glucose (C) Fats (D) Protein
Ans: A
88. Who discovered Penicillin in 1928 ?
(A) Edward Jenner (B) Alexander Fleming (C) Gregor Mendel (D) Louis Pasteur
Ans: B
89. The nitrogen base which is not present in DNA is ______
(A) Adenine (B) Thymine (C) Guanine (D) Uracil
Ans: D
90. Which of the following diseases is not a bacterial disease ?
(A) Tuberculosis (B) Tetanus (C) Chicken-pox (D) Anthrax
Ans: C
91:-Pollination by bat is
A:-Hydrophily B:-Cheiropterophily C:-Malacophily D:-Entomophily
Ans: B
92:-Pisum sativum belongs to the family
A:-Solanaceae B:-Fabaceae C:-Malvaceae D:-Liliaceae
Ans: B
93:-Pyramid of number is inverted in
A:-Pond ecosystem B:-Grassland ecosystem
C:-Parasitic ecosystem D:-Fresh water ecosystem
Ans: C
94:-In which phase of cell cycle does replication of genetic material takes place ?
A:-S phase B:-`G_0` phase C:-`G_(1` phase D:-`G_2` phase
Ans: A
95:-Which among the following represents non-sense codons ?
A:-UAA B:-UAG C:-UGA D:-All of these
Ans: D
96:-The chief pigment associated with photosynthesis is
A:-Chlorophyll b B:-Chlorophyll c C:-Chlorophyll a D:-Chlorophyll d
Ans: C
97:-Hypercalcemic hormone is
A:-Thyroxine B:-Thymosin
C:-Parathyroid hormone D:-Adrenalin
Ans: C
98:-The excretory organs in cockroach is
A:-Gills B:-Malpighian tubules C:-Book gills D:-Book lungs
Ans: B
99:-Aorta arises from
A:-Right atrium B:-Left atrium C:-Right ventricle D:-Left ventricle
Ans: D
100:-The protein portion of the enzyme is
A:-Apoenzyme B:-Prosthetic group C:-Co-factor D:-Coenzyme
Ans: A