BIOLOGY -PAGE 6
1. Which one of the following groups of animals is bilaterally symmetrical and triploblastic ?
1) Aschelminthes (round worms) 2) Ctenophores 3) Sponges 4) Coelenterates (Cnidarians)
Ans: 1
2. Which one of the following is commonly used in transfer of foreign DNA into crop plants ?
1) Meloidogyne incognita 2) Agrobacterium tumefaciens 3) Penicillium expansum 4) Trichoderma harzianum
Ans: 2
3. Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by:
1) The Montreal Protocol 2) The Koyoto Protocol 3) The Vienna Convention 4) Rio de Janeiro Conference
Ans: 1
4. What is true about Bt toxin ?
1) Bt protein exists as active toxin in the Bacillus.
2) The activated toxin enters the ovaries of the pest to sterilise it and thus prevent its multiplication.
3) The concerned Bacillus has antitoxins.
4) The inactive protoxin gets converted into active form in the insect gut.
Ans: 4
5. Peripatus is a connecting link between:
1) Mollusca and Echinodermata 2) Annelida and Arthropoda 3) Coelenterata and Porifera 4) Ctenophora and Platyhelminthis
Ans: 2
6. T.O. Diener discovered a:
1) Free infectious DNA 2) Infectious protein 3) Bacteriophage 4) Free infectious RNA
Ans: 4
7. Seminal plasma in humans is rich in:
1) fructose and calcium but has no enzymes
2) glucose and certain enzymes but has no calcium
3) fructose and certain enzymes but poor in calcium
4) fructose, calcium and certain enzymes
Ans: 3
8. A fruit developed from hypanthodium inflorescence is called:
1) Sorosis 2) Syconus 3) Caryopsis 4) Hesperidium
Ans: 2
9. The cell junctions called tight, adhering and gap junctions are found in:
1) Connective tissue 2) Epithelial tissue 3) Neural tissue 4) Muscular tissue
Ans: 2
10. What will happen if the stretch receptors of the urinary bladder wall are totally removed ?
1) Micturition will continue 2) Urine will continue to collect normally in the bladder
3) There will be no micturition 4) Urine will not collect in the bladder
Ans: 3
11. If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is:
1) coelomic fluid 2) haemolymph
3) slimy mucus 4) excretory fluid
Ans: 1
12. The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because "O" in it refers to having:
1) overdominance of this type on the genes for A and B types
2) one antibody only - either anti-A or anti-B on the RBCs
3) no antigens A and B on RBCs
4) other antigens besides A and B on RBCs
Ans: 3
13. One of the synthetic auxin is:
1) IAA 2) GA 3) IBA 4) NAA
Ans: 4
14. A person likely to develop tetanus is immunised by administering:
1) Preformed antibodies 2) Wide spectrum antibiotics 3) Weakened germs
4) Dead germs
Ans: 3
15. Alzheimer disease in humans is associated with the deficiency of:
1) glutamic acid 2) acetylcholine 3) gamma aminobutyric acid (GABA) 4) dopamine
Ans: 2
16. Biochemical Oxygen Demand (BOD) in a river water:
1) has no relationship with concentration of oxygen in the water.
2) gives a measure of salmonella in the water.
3) increases when sewage gets mixed with river water.
4) remains unchanged when algal bloom occurs.
Ans: 3
17. The genetic defect - adenosine deaminase (ADA) deficiency may be cured permanently by:
1) administering adenosine deaminase activators.
2) introducing bone marrow cells producing ADA into cells at early embryonic stages.
3) enzyme replacement therapy.
4) periodic infusion of genetically engineered lymphocytes having functional ADA cDNA.
Ans: 2
18. Compared to blood our lymph has:
1) plasma without proteins 2) more WBCs and no RBCs 3) more RBCs and less WBCs 4) no plasma
Ans: 2
19. Which of the following is a pair of viral diseases ?
1) Common Cold, AIDS 2) Dysentery, Common Cold 3) Typhoid, Tuberculosis 4) Ringworm, AIDS
Ans: 1
20. Aerobic respiratory pathway is appropriately termed:
1) Parabolic 2) Amphibolic 3) Anabolic 4) Catabolic
Ans: 2
21. Cytoskeleton is made up of:
1) Callose deposits 2) Cellulosic microfibrils 3) Proteinaceous filaments 4) Calcium carbonate granules
Ans: 3
22. An example of axile placentation is:
1) Dianthus 2) Lemon 3) Marigold 4) Argemone
Ans: 2
23. Which one of the following has haplontic life cycle ?
1) Polytrichum 2) Ustilago 3) Wheat 4) Funaria
Ans: 2
24. Steps taken by the Government of India to control air pollution include:
1) compulsory PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons.
2) permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles.
3) use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucks.
4) compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel.
Ans: 1
25. Which one of the following is considered important in the development of seed habit?
1) Heterospory 2) Haplontic life cycle 3) Free-living gametophyte 4) Dependent sporophyte
Ans: 1
26. The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is:
1) elongating 2) widening 3) differentiating 4) maturing
Ans: 4
27. The correct sequence of plants in a hydrosere is:
1) Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak
2) Pistia → Volvox → Scirpus → Hydrilla → Oak → Lantana
3) Oak → Lantana → Volvox → Hydrilla → Pistia → Scirpus
4) Oak → Lantana → Scirpus → Pistia → Hydrilla → Volvox
Ans: 1
28. Stroma in the chloroplasts of higher plant contains:
1) Light-dependent reaction enzymes 2) Ribosomes 3) Chlorophyll 4) Light-independent reaction enzymes
Ans: 4
29. A health disorder that results from the deficiency of thyroxine in adults and characterised by (i) a low metabolic rate, (ii) increase in body weight and (iii) tendency to retain water in tissues is:
1) simple goitre 2) myxoedema 3) cretinism 4) hypothyroidism
Ans: 2
30. Mannitol is the stored food in:
1) Porphyra 2) Fucus 3) Gracillaria 4) Chara
Ans: 2
31. Which one of the following pairs is wrongly matched ?
1) Alcohol - nitrogenase 2) Fruit juice - pectinase 3) Textile - amylase 21/37
4) Detergents - lipase
Ans: 1
32. Which of the following is not used as a biopesticide ?
1) Trichoderma harzianum 2) Nuclear Polyhedrosis Virus (NPV) 3) Xanthomonas campestris 4) Bacillus thuringiensis
Ans: 3
33. Which one of the following is a vascular cryptogam?
1) Ginkgo 2) Marchantia 3) Cedrus 4) Equisetum
Ans: 4
34. In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?
1) S - start of systole 2) T - end of diastole 3) P - depolarisation of the atria 4) R - repolarisation of ventricles
Ans: 3
35. Uric acid is the chief nitrogenous component of the excretory products of:
1) Earthworm 2) Cockroach 3) Frog 4) Man
Ans: 2
36. Guard cells help in:
1) Transpiration 2) Guttation 3) Fighting against infection 4) Protection against grazing
Ans: 1
37. Montreal Protocol aims at:
1) Biodiversity conservation 2) Control of water pollution 3) Control of CO2 emission 4) Reduction of ozone depleting substances
Ans: 4
38. DDT residues are rapidly passed through food chain causing biomagnification because DDT is:
1) moderately toxic
2) non-toxic to aquatic animals
3) water soluble
4) lipid soluble
Ans: 4
39. Vegetative propagation in mint occurs by:
1) Offset 2) Rhizome 3) Sucker 4) Runner
Ans: 3
40. Select the incorrect statement from the following:
1) Galactosemia is an inborn error of metabolism
2) Small population size results in random genetic drift in a population
3) Baldness is a sex-limited trait
4) Linkage is an exception to the principle of independent assortment in heredity
Ans: 3
41. Cotyledons and testa respectively are edible parts in:
1) walnut and tamarind
2) french bean and coconut
3) cashew nut and litchi
4) groundnut and pomegranate
Ans: 4
42. Which one of the following statements is correct ?
1) Benign tumours show the property of metastasis.
2) Heroin accelerates body functions.
3) Malignant tumours may exhibit metastasis.
4) Patients who have undergone surgery are given cannabinoids to relieve pain.
Ans: 3
43. The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is:
1) spermatogonia - spermatocyte - spermatid - sperms
2) spermatid - spermatocyte - spermatogonia - sperms
3) spermatogonia - spermatid - spermatocyte - sperms
4) spermatocyte - spermatogonia - spermatid - sperms
Ans: 1
44. Use of anti-histamines and steroids give a quick relief from:
1) Nausea 2) Cough 3) Headache 4) Allergy
Ans: 4
45. Chipko movement was launched for the protection of:
1) Forests 2) Livestock 3) Wet lands 4) Grasslands
Ans: 1
46. Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female ?
1) maintenance of the hypertrophical endometrial lining
2) maintenance of high concentration of sex hormones in the blood stream
3) retention of well-developed corpus luteum
4) fertilisation of the ovum
Ans: 4
47. Globulins contained in human blood plasma are primarily involved in:
1) osmotic balance of body fluids 2) oxygen transport in the blood 3) clotting of blood 4) defence mechanisms of body
Ans: 4
48. Palisade parenchyma is absent in leaves of :
1) Mustard 2) Soybean 3) Gram 4) Sorghum
Ans: 4
49. In barley stem vascular bundles are:
1) closed and scattered 2) open and in a ring 3) closed and radial 4) open and scattered
Ans: 1
50. Somaclones are obtained by
1) Plant breeding
2) Irradiation
3) Genetic engineering
4) Tissue culture
Ans: 4
1) Aschelminthes (round worms) 2) Ctenophores 3) Sponges 4) Coelenterates (Cnidarians)
Ans: 1
2. Which one of the following is commonly used in transfer of foreign DNA into crop plants ?
1) Meloidogyne incognita 2) Agrobacterium tumefaciens 3) Penicillium expansum 4) Trichoderma harzianum
Ans: 2
3. Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by:
1) The Montreal Protocol 2) The Koyoto Protocol 3) The Vienna Convention 4) Rio de Janeiro Conference
Ans: 1
4. What is true about Bt toxin ?
1) Bt protein exists as active toxin in the Bacillus.
2) The activated toxin enters the ovaries of the pest to sterilise it and thus prevent its multiplication.
3) The concerned Bacillus has antitoxins.
4) The inactive protoxin gets converted into active form in the insect gut.
Ans: 4
5. Peripatus is a connecting link between:
1) Mollusca and Echinodermata 2) Annelida and Arthropoda 3) Coelenterata and Porifera 4) Ctenophora and Platyhelminthis
Ans: 2
6. T.O. Diener discovered a:
1) Free infectious DNA 2) Infectious protein 3) Bacteriophage 4) Free infectious RNA
Ans: 4
7. Seminal plasma in humans is rich in:
1) fructose and calcium but has no enzymes
2) glucose and certain enzymes but has no calcium
3) fructose and certain enzymes but poor in calcium
4) fructose, calcium and certain enzymes
Ans: 3
8. A fruit developed from hypanthodium inflorescence is called:
1) Sorosis 2) Syconus 3) Caryopsis 4) Hesperidium
Ans: 2
9. The cell junctions called tight, adhering and gap junctions are found in:
1) Connective tissue 2) Epithelial tissue 3) Neural tissue 4) Muscular tissue
Ans: 2
10. What will happen if the stretch receptors of the urinary bladder wall are totally removed ?
1) Micturition will continue 2) Urine will continue to collect normally in the bladder
3) There will be no micturition 4) Urine will not collect in the bladder
Ans: 3
11. If a live earthworm is pricked with a needle on its outer surface without damaging its gut, the fluid that comes out is:
1) coelomic fluid 2) haemolymph
3) slimy mucus 4) excretory fluid
Ans: 1
12. The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because "O" in it refers to having:
1) overdominance of this type on the genes for A and B types
2) one antibody only - either anti-A or anti-B on the RBCs
3) no antigens A and B on RBCs
4) other antigens besides A and B on RBCs
Ans: 3
13. One of the synthetic auxin is:
1) IAA 2) GA 3) IBA 4) NAA
Ans: 4
14. A person likely to develop tetanus is immunised by administering:
1) Preformed antibodies 2) Wide spectrum antibiotics 3) Weakened germs
4) Dead germs
Ans: 3
15. Alzheimer disease in humans is associated with the deficiency of:
1) glutamic acid 2) acetylcholine 3) gamma aminobutyric acid (GABA) 4) dopamine
Ans: 2
16. Biochemical Oxygen Demand (BOD) in a river water:
1) has no relationship with concentration of oxygen in the water.
2) gives a measure of salmonella in the water.
3) increases when sewage gets mixed with river water.
4) remains unchanged when algal bloom occurs.
Ans: 3
17. The genetic defect - adenosine deaminase (ADA) deficiency may be cured permanently by:
1) administering adenosine deaminase activators.
2) introducing bone marrow cells producing ADA into cells at early embryonic stages.
3) enzyme replacement therapy.
4) periodic infusion of genetically engineered lymphocytes having functional ADA cDNA.
Ans: 2
18. Compared to blood our lymph has:
1) plasma without proteins 2) more WBCs and no RBCs 3) more RBCs and less WBCs 4) no plasma
Ans: 2
19. Which of the following is a pair of viral diseases ?
1) Common Cold, AIDS 2) Dysentery, Common Cold 3) Typhoid, Tuberculosis 4) Ringworm, AIDS
Ans: 1
20. Aerobic respiratory pathway is appropriately termed:
1) Parabolic 2) Amphibolic 3) Anabolic 4) Catabolic
Ans: 2
21. Cytoskeleton is made up of:
1) Callose deposits 2) Cellulosic microfibrils 3) Proteinaceous filaments 4) Calcium carbonate granules
Ans: 3
22. An example of axile placentation is:
1) Dianthus 2) Lemon 3) Marigold 4) Argemone
Ans: 2
23. Which one of the following has haplontic life cycle ?
1) Polytrichum 2) Ustilago 3) Wheat 4) Funaria
Ans: 2
24. Steps taken by the Government of India to control air pollution include:
1) compulsory PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons.
2) permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles.
3) use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucks.
4) compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel.
Ans: 1
25. Which one of the following is considered important in the development of seed habit?
1) Heterospory 2) Haplontic life cycle 3) Free-living gametophyte 4) Dependent sporophyte
Ans: 1
26. The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is:
1) elongating 2) widening 3) differentiating 4) maturing
Ans: 4
27. The correct sequence of plants in a hydrosere is:
1) Volvox → Hydrilla → Pistia → Scirpus → Lantana → Oak
2) Pistia → Volvox → Scirpus → Hydrilla → Oak → Lantana
3) Oak → Lantana → Volvox → Hydrilla → Pistia → Scirpus
4) Oak → Lantana → Scirpus → Pistia → Hydrilla → Volvox
Ans: 1
28. Stroma in the chloroplasts of higher plant contains:
1) Light-dependent reaction enzymes 2) Ribosomes 3) Chlorophyll 4) Light-independent reaction enzymes
Ans: 4
29. A health disorder that results from the deficiency of thyroxine in adults and characterised by (i) a low metabolic rate, (ii) increase in body weight and (iii) tendency to retain water in tissues is:
1) simple goitre 2) myxoedema 3) cretinism 4) hypothyroidism
Ans: 2
30. Mannitol is the stored food in:
1) Porphyra 2) Fucus 3) Gracillaria 4) Chara
Ans: 2
31. Which one of the following pairs is wrongly matched ?
1) Alcohol - nitrogenase 2) Fruit juice - pectinase 3) Textile - amylase 21/37
4) Detergents - lipase
Ans: 1
32. Which of the following is not used as a biopesticide ?
1) Trichoderma harzianum 2) Nuclear Polyhedrosis Virus (NPV) 3) Xanthomonas campestris 4) Bacillus thuringiensis
Ans: 3
33. Which one of the following is a vascular cryptogam?
1) Ginkgo 2) Marchantia 3) Cedrus 4) Equisetum
Ans: 4
34. In a standard ECG which one of the following alphabets is the correct representation of the respective activity of the human heart?
1) S - start of systole 2) T - end of diastole 3) P - depolarisation of the atria 4) R - repolarisation of ventricles
Ans: 3
35. Uric acid is the chief nitrogenous component of the excretory products of:
1) Earthworm 2) Cockroach 3) Frog 4) Man
Ans: 2
36. Guard cells help in:
1) Transpiration 2) Guttation 3) Fighting against infection 4) Protection against grazing
Ans: 1
37. Montreal Protocol aims at:
1) Biodiversity conservation 2) Control of water pollution 3) Control of CO2 emission 4) Reduction of ozone depleting substances
Ans: 4
38. DDT residues are rapidly passed through food chain causing biomagnification because DDT is:
1) moderately toxic
2) non-toxic to aquatic animals
3) water soluble
4) lipid soluble
Ans: 4
39. Vegetative propagation in mint occurs by:
1) Offset 2) Rhizome 3) Sucker 4) Runner
Ans: 3
40. Select the incorrect statement from the following:
1) Galactosemia is an inborn error of metabolism
2) Small population size results in random genetic drift in a population
3) Baldness is a sex-limited trait
4) Linkage is an exception to the principle of independent assortment in heredity
Ans: 3
41. Cotyledons and testa respectively are edible parts in:
1) walnut and tamarind
2) french bean and coconut
3) cashew nut and litchi
4) groundnut and pomegranate
Ans: 4
42. Which one of the following statements is correct ?
1) Benign tumours show the property of metastasis.
2) Heroin accelerates body functions.
3) Malignant tumours may exhibit metastasis.
4) Patients who have undergone surgery are given cannabinoids to relieve pain.
Ans: 3
43. The correct sequence of spermatogenetic stages leading to the formation of sperms in a mature human testis is:
1) spermatogonia - spermatocyte - spermatid - sperms
2) spermatid - spermatocyte - spermatogonia - sperms
3) spermatogonia - spermatid - spermatocyte - sperms
4) spermatocyte - spermatogonia - spermatid - sperms
Ans: 1
44. Use of anti-histamines and steroids give a quick relief from:
1) Nausea 2) Cough 3) Headache 4) Allergy
Ans: 4
45. Chipko movement was launched for the protection of:
1) Forests 2) Livestock 3) Wet lands 4) Grasslands
Ans: 1
46. Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female ?
1) maintenance of the hypertrophical endometrial lining
2) maintenance of high concentration of sex hormones in the blood stream
3) retention of well-developed corpus luteum
4) fertilisation of the ovum
Ans: 4
47. Globulins contained in human blood plasma are primarily involved in:
1) osmotic balance of body fluids 2) oxygen transport in the blood 3) clotting of blood 4) defence mechanisms of body
Ans: 4
48. Palisade parenchyma is absent in leaves of :
1) Mustard 2) Soybean 3) Gram 4) Sorghum
Ans: 4
49. In barley stem vascular bundles are:
1) closed and scattered 2) open and in a ring 3) closed and radial 4) open and scattered
Ans: 1
50. Somaclones are obtained by
1) Plant breeding
2) Irradiation
3) Genetic engineering
4) Tissue culture
Ans: 4
51. In the case of peppered moth (Biston betularia) the black-coloured form became dominant over the light-coloured form in England during industrial revolution. This is an example of :
1) appearance of the darker coloured individuals due to very poor sunlight
2) protective mimicry
3) inheritance of darker colour character acquired due to the darker environment
4) natural selection whereby the darker forms were selected
Ans: 2
52. Transgenic plants are the ones:
1) generated by introducing foreign DNA into a cell and regenerating a plant from that cell.
2) produced after protoplast fusion in artificial medium.
3) grown in artificial medium after hybridization in the field.
4) produced by a somatic embryo in artificial medium.
Ans: 1
53. Which one of the following pairs of food components in humans reaches the stomach totally undigested?
1) Starch and fat 2) Fat and cellulose 3) Starch and cellulose 4) Protein and starch
Ans: 2
54. A change in the amount of yolk and its distribution in the egg will affect:
1) Pattern of cleavage 2) Number of blastomeres produced 3) Fertilization 4) Formation of zygote
Ans: 1
55. Middle lamella is composed mainly of:
1) Muramic acid 2) Calcium pectate 3) Phosphoglycerides 4) Hemicellulose
Ans: 2
56. Elbow joint is an example of:
1) hinge joint 2) gliding joint 3) ball and socket joint 4) pivot joint
Ans: 1
57. Which of the following is a symbiotic nitrogen fixer ?
1) Azotobacter 2) Frankia 3) Azolla 4) Glomus
Ans: 2
58. Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a "triplet"?
1) Hershey and Chase 2) Morgan and Sturtevant 3) Beadle and Tatum 4) Nirenberg and Mathaei
Ans: 4
59. Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem ?
1) Fish 2) Zooplankton 3) Frog 4) Phytoplankton
Ans: 1
60. Which one of the following acids is a derivative of carotenoids ?
1) Indole-3-acetic acid 2) Gibberellic acid 3) Abscisic acid 4) Indole butyric acid
Ans: 3
61. The bacterium Bacillus thuringiensis is widely used in contemporary biology as:
1) Insecticide 2) Agent for production of dairy products 3) Source of industrial enzyme 4) Indicator of water pollution
Ans: 1
62. An example of a seed with endosperm, perisperm, and caruncle is:
1) coffee 2) lily 3) castor 4) cotton
Ans: 3
63. Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of :
1) Mesophytes
2) Epiphytes
3) Hydrophytes
4) Xerophytes
Ans: 3
64. Point mutation involves:
1) Change in single base pair 2) Duplication 3) Deletion 4) Insertion
Ans: 1
65. Which one of the following correctly describes the location of some body parts in the earthworm Pheretima ?
1) Four pairs of spermathecae in 4 - 7 segments.
2) One pair of ovaries attached at intersegmental septum of 14th and 15th segments.
3) Two pairs of testes in 10th and 11th segments.
4) Two pairs of accessory glands in 16 - 18 segments.
Ans: 3
66. The kind of tissue that forms the supportive structure in our pinna (external ears) is also found in:
1) nails 2) ear ossicles 3) tip of the nose 4) vertebrae
Ans: 367:-The United Nations General Assembly declared the year 2010 as the International year for conservation of
A:-Soil
B:-Water
C:-Biodiversity
D:-Agriculture
Ans: C
68:-Name the vector that transmit the disease Malaria
A:-Female anopheles mosquito
B:-Aedes
C:-Female culex mosquito
D:-Male anopheles mosquito
Ans: A
69:-In India which state's High Court declared the holy rivers Ganga and Yamuna having same status of a legal person with all corresponding rights, duties and liabilities of a living person ?
A:-Andra Pradesh
B:-Madhya Pradesh
C:-Uttarakhand
D:-Sikkim
Ans: C
70:-World Day of Migratory Birds
A:-April 30
B:-May 12
C:-April 18
D:-May 11
Ans: B
71:-Which of the following is not a primary green house gas present in Earth's atmosphere ?
A:-Water vapour
B:-Nitrous oxide
C:-Carbon monoxide
D:-Carbon dioxide
Ans: C
72:-Dolphins breath by swimming on the surface of water and inhaling fresh air. Name the respiratory organ of Dolphin.
A:-Lungs
B:-Skin
C:-Gills
D:-Gill slits
Ans: A
73:-India's first organic state
A:-Andra Pradesh
B:-West Bengal
C:-Karnataka
D:-Sikkim
Ans: D
74:-The bacteria Rhizobium found in root nodules of legumes to fix atmospheric
A:-Nitrogen
B:-Oxygen
C:-Carbon Dioxide
D:-Phosphorus
Ans: A
75:-Which of the among is a Vitamin deficiency disease ?
A:-Acromegaly
B:-Dwarfism
C:-Beriberi
D:-Goitre
Ans: C
76:-Among the following hormones find out the plant hormone.
A:-Melatonin
B:-Gibberellin
C:-Thymosin
D:-Glucagon
Ans: B
1) appearance of the darker coloured individuals due to very poor sunlight
2) protective mimicry
3) inheritance of darker colour character acquired due to the darker environment
4) natural selection whereby the darker forms were selected
Ans: 2
52. Transgenic plants are the ones:
1) generated by introducing foreign DNA into a cell and regenerating a plant from that cell.
2) produced after protoplast fusion in artificial medium.
3) grown in artificial medium after hybridization in the field.
4) produced by a somatic embryo in artificial medium.
Ans: 1
53. Which one of the following pairs of food components in humans reaches the stomach totally undigested?
1) Starch and fat 2) Fat and cellulose 3) Starch and cellulose 4) Protein and starch
Ans: 2
54. A change in the amount of yolk and its distribution in the egg will affect:
1) Pattern of cleavage 2) Number of blastomeres produced 3) Fertilization 4) Formation of zygote
Ans: 1
55. Middle lamella is composed mainly of:
1) Muramic acid 2) Calcium pectate 3) Phosphoglycerides 4) Hemicellulose
Ans: 2
56. Elbow joint is an example of:
1) hinge joint 2) gliding joint 3) ball and socket joint 4) pivot joint
Ans: 1
57. Which of the following is a symbiotic nitrogen fixer ?
1) Azotobacter 2) Frankia 3) Azolla 4) Glomus
Ans: 2
58. Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a "triplet"?
1) Hershey and Chase 2) Morgan and Sturtevant 3) Beadle and Tatum 4) Nirenberg and Mathaei
Ans: 4
59. Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem ?
1) Fish 2) Zooplankton 3) Frog 4) Phytoplankton
Ans: 1
60. Which one of the following acids is a derivative of carotenoids ?
1) Indole-3-acetic acid 2) Gibberellic acid 3) Abscisic acid 4) Indole butyric acid
Ans: 3
61. The bacterium Bacillus thuringiensis is widely used in contemporary biology as:
1) Insecticide 2) Agent for production of dairy products 3) Source of industrial enzyme 4) Indicator of water pollution
Ans: 1
62. An example of a seed with endosperm, perisperm, and caruncle is:
1) coffee 2) lily 3) castor 4) cotton
Ans: 3
63. Reduction in vascular tissue, mechanical tissue and cuticle is characteristic of :
1) Mesophytes
2) Epiphytes
3) Hydrophytes
4) Xerophytes
Ans: 3
64. Point mutation involves:
1) Change in single base pair 2) Duplication 3) Deletion 4) Insertion
Ans: 1
65. Which one of the following correctly describes the location of some body parts in the earthworm Pheretima ?
1) Four pairs of spermathecae in 4 - 7 segments.
2) One pair of ovaries attached at intersegmental septum of 14th and 15th segments.
3) Two pairs of testes in 10th and 11th segments.
4) Two pairs of accessory glands in 16 - 18 segments.
Ans: 3
66. The kind of tissue that forms the supportive structure in our pinna (external ears) is also found in:
1) nails 2) ear ossicles 3) tip of the nose 4) vertebrae
Ans: 367:-The United Nations General Assembly declared the year 2010 as the International year for conservation of
A:-Soil
B:-Water
C:-Biodiversity
D:-Agriculture
Ans: C
68:-Name the vector that transmit the disease Malaria
A:-Female anopheles mosquito
B:-Aedes
C:-Female culex mosquito
D:-Male anopheles mosquito
Ans: A
69:-In India which state's High Court declared the holy rivers Ganga and Yamuna having same status of a legal person with all corresponding rights, duties and liabilities of a living person ?
A:-Andra Pradesh
B:-Madhya Pradesh
C:-Uttarakhand
D:-Sikkim
Ans: C
70:-World Day of Migratory Birds
A:-April 30
B:-May 12
C:-April 18
D:-May 11
Ans: B
71:-Which of the following is not a primary green house gas present in Earth's atmosphere ?
A:-Water vapour
B:-Nitrous oxide
C:-Carbon monoxide
D:-Carbon dioxide
Ans: C
72:-Dolphins breath by swimming on the surface of water and inhaling fresh air. Name the respiratory organ of Dolphin.
A:-Lungs
B:-Skin
C:-Gills
D:-Gill slits
Ans: A
73:-India's first organic state
A:-Andra Pradesh
B:-West Bengal
C:-Karnataka
D:-Sikkim
Ans: D
74:-The bacteria Rhizobium found in root nodules of legumes to fix atmospheric
A:-Nitrogen
B:-Oxygen
C:-Carbon Dioxide
D:-Phosphorus
Ans: A
75:-Which of the among is a Vitamin deficiency disease ?
A:-Acromegaly
B:-Dwarfism
C:-Beriberi
D:-Goitre
Ans: C
76:-Among the following hormones find out the plant hormone.
A:-Melatonin
B:-Gibberellin
C:-Thymosin
D:-Glucagon
Ans: B
77. Which of the following would appear as the pioneer organisms on bare rocks ?
(1) Mosses
(2) Green algae
(3) Lichens
(4) Liverworts
Ans: 3
78. Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options :
(1) The above processes happen only during night time.
(2) One process occurs during day time, and the other at night.
(3) Both processes cannot happen simultaneously.
(4) Both processes can happen together because the diffusion coefficient of water and C02 is different.
Ans: 4
79. Lack of relaxation between successive stimuli in sustained muscle contraction is known as :
(1) Tetanus
(2) Tonus
(3) Spasm
(4) Fatigue
Ans: 1
80. Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers :
(1) Ammonia
(2) Methane
(3) Nitrous oxide
(4) Ozone
Ans: 4
81. Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature ?
(1) The names are written in Latin and are italicised
(2) When written by hand, the names are to be underlined
(3) Biological names can be written in any language
(4) The first word in a biological name represents the genus name, and the second is a specific epithet
Ans: 3
82. A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in :
(1) Somaclonal variation
(2) Polyteny
(3) Aneuploidy
(4) Polyploidy
Ans: 4
83. The two polypeptides of human insulin are linked together by :
(1) Covalent bond
(2) Disulphide bridges
(3) Hydrogen bonds
(4) Phosphodiester bond
Ans: 2
84. Reduction in pH of blood will :
(1) decrease the affinity of hemoglobin with oxygen.
(2) release bicarbonate ions by the liver.
(3) reduce the rate of heart beat.
(4) reduce the blood supply to the brain.
Ans: 1
85. In a chloroplast the highest number of protons are found in :
(1) Inter membrane space
(2) Antennae complex
(3) Stroma
(4) Lumen of thylakoids
Ans: 4
86. Which type of tissue correctly matches with its location ?
Tissue-Location
(1) Transitional epithelium -Tip of nose
(2) Cuboidal epithelium -Lining of stomach
(3) Smooth muscle - Wall of intestine
(4) Areolar tissue -Tendons
Ans: 3
87. Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?
(1) Aldosterone - Atrial Natriuretic Factor
(2) Relaxin - Inhibin
(3) Parathorrpone - Calcitonin
(4) Insulin - Glucagon
Ans: 2
88. In mammals, which blood vessel would normally carry largest amount of urea ?
(1) Hepatic Vein
(2) Hepatic Portal Vein
(3) Renal Vein
(4) Dorsal Aorta
Ans: 1
89. Pick out the correct statements :
(a) Haemophilia is a sex-linked recessive disease.
(b) Down's syndrome is due to aneuploidy.
(c) Phenylketonuria is an autosomal recessive gene disorder.
(d) Sickle cell anaemia is an X -linked recessive gene disorder.
(1) (a), (c) and (d) are correct.
(2) (a), (b) and (c) are correct.
(3) (a) and (d) are correct.
(4) (b)and (d) are correct.
Ans: 2
(1) Mosses
(2) Green algae
(3) Lichens
(4) Liverworts
Ans: 3
78. Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options :
(1) The above processes happen only during night time.
(2) One process occurs during day time, and the other at night.
(3) Both processes cannot happen simultaneously.
(4) Both processes can happen together because the diffusion coefficient of water and C02 is different.
Ans: 4
79. Lack of relaxation between successive stimuli in sustained muscle contraction is known as :
(1) Tetanus
(2) Tonus
(3) Spasm
(4) Fatigue
Ans: 1
80. Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers :
(1) Ammonia
(2) Methane
(3) Nitrous oxide
(4) Ozone
Ans: 4
81. Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature ?
(1) The names are written in Latin and are italicised
(2) When written by hand, the names are to be underlined
(3) Biological names can be written in any language
(4) The first word in a biological name represents the genus name, and the second is a specific epithet
Ans: 3
82. A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in :
(1) Somaclonal variation
(2) Polyteny
(3) Aneuploidy
(4) Polyploidy
Ans: 4
83. The two polypeptides of human insulin are linked together by :
(1) Covalent bond
(2) Disulphide bridges
(3) Hydrogen bonds
(4) Phosphodiester bond
Ans: 2
84. Reduction in pH of blood will :
(1) decrease the affinity of hemoglobin with oxygen.
(2) release bicarbonate ions by the liver.
(3) reduce the rate of heart beat.
(4) reduce the blood supply to the brain.
Ans: 1
85. In a chloroplast the highest number of protons are found in :
(1) Inter membrane space
(2) Antennae complex
(3) Stroma
(4) Lumen of thylakoids
Ans: 4
86. Which type of tissue correctly matches with its location ?
Tissue-Location
(1) Transitional epithelium -Tip of nose
(2) Cuboidal epithelium -Lining of stomach
(3) Smooth muscle - Wall of intestine
(4) Areolar tissue -Tendons
Ans: 3
87. Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?
(1) Aldosterone - Atrial Natriuretic Factor
(2) Relaxin - Inhibin
(3) Parathorrpone - Calcitonin
(4) Insulin - Glucagon
Ans: 2
88. In mammals, which blood vessel would normally carry largest amount of urea ?
(1) Hepatic Vein
(2) Hepatic Portal Vein
(3) Renal Vein
(4) Dorsal Aorta
Ans: 1
89. Pick out the correct statements :
(a) Haemophilia is a sex-linked recessive disease.
(b) Down's syndrome is due to aneuploidy.
(c) Phenylketonuria is an autosomal recessive gene disorder.
(d) Sickle cell anaemia is an X -linked recessive gene disorder.
(1) (a), (c) and (d) are correct.
(2) (a), (b) and (c) are correct.
(3) (a) and (d) are correct.
(4) (b)and (d) are correct.
Ans: 2
90. Photosensitive compound in human eye is made up of :
(1) Opsin and Retinol
(2) Transducin and Retinene
(3) Guanosine and Retinol
(4) Opsin and Retinal
Ans: 4
91. One of the major components of cell wall of most fungi is :
(1) Cellulose (2) Hemicellulose
(3) Chitin (4) Peptidoglycan
Ans: 3
92. Following are the two statements regarding the 'origin of life :
(a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(b) The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements which one of the following options is correct ?
(1) Both (a) and (b) are correct.
(2) Both (a) and (b)are false.
(3) (a)is correct but (b)is false.
(4) (b)is correct but (a) is false.
Ans: 1
93. Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom :
(1) Fungi (2) Animalia (3) Monera (4) Protista
Ans: 4
94. Tricarpellary, syncarpous gynoecium is found in flowers of :
(1) Fabaceae (2) Poaceae (3) Liliaceae (4) Solanaceae
Ans: 3
95. A complex of ribosomes attached to a single strand of RNA is known as :
(1) Polypeptide (2) Okazaki fragment (3) Polysome (4) Polymer
Ans: 3
96. In the stomach, gastric acid is secreted by the
(1) peptic cells (2) acidic cells (3) gastrin secreting cells (4) parietal cells
Ans: 4
97. Identify the correct statement on 'inhibin' :
(1) Is produced by granulose cells in ovary and inhibits the secretion of LH.
(2) Is produced by nurse cells in testes and inhibits the secretion of LH.
(3) Inhibits the secretion of LH, FSH and Prolactin.
(4) Is produced by granulose cells in ovary and inhibits the secretion of FSH.
Ans: 4
98. The standard petal of a papilionaceous corolla is also called :
(1) Vexillum
(2) Corona
(3) Carina
(4) Pap pus
Ans: 1
99. In bryophytes and pteridophytes, transport of male gametes requires :
(1) Birds (2) Water (3) Wind (4) Insects
Ans: 2
100. Proximal end of the filament of stamen is attached to the :
(1) Placenta (2) Thalamus or petal (3) Anther (4) Connective
Ans: 2
(1) Opsin and Retinol
(2) Transducin and Retinene
(3) Guanosine and Retinol
(4) Opsin and Retinal
Ans: 4
91. One of the major components of cell wall of most fungi is :
(1) Cellulose (2) Hemicellulose
(3) Chitin (4) Peptidoglycan
Ans: 3
92. Following are the two statements regarding the 'origin of life :
(a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(b) The first autotrophic organisms were the chemoautotrophs that never released oxygen.
Of the above statements which one of the following options is correct ?
(1) Both (a) and (b) are correct.
(2) Both (a) and (b)are false.
(3) (a)is correct but (b)is false.
(4) (b)is correct but (a) is false.
Ans: 1
93. Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom :
(1) Fungi (2) Animalia (3) Monera (4) Protista
Ans: 4
94. Tricarpellary, syncarpous gynoecium is found in flowers of :
(1) Fabaceae (2) Poaceae (3) Liliaceae (4) Solanaceae
Ans: 3
95. A complex of ribosomes attached to a single strand of RNA is known as :
(1) Polypeptide (2) Okazaki fragment (3) Polysome (4) Polymer
Ans: 3
96. In the stomach, gastric acid is secreted by the
(1) peptic cells (2) acidic cells (3) gastrin secreting cells (4) parietal cells
Ans: 4
97. Identify the correct statement on 'inhibin' :
(1) Is produced by granulose cells in ovary and inhibits the secretion of LH.
(2) Is produced by nurse cells in testes and inhibits the secretion of LH.
(3) Inhibits the secretion of LH, FSH and Prolactin.
(4) Is produced by granulose cells in ovary and inhibits the secretion of FSH.
Ans: 4
98. The standard petal of a papilionaceous corolla is also called :
(1) Vexillum
(2) Corona
(3) Carina
(4) Pap pus
Ans: 1
99. In bryophytes and pteridophytes, transport of male gametes requires :
(1) Birds (2) Water (3) Wind (4) Insects
Ans: 2
100. Proximal end of the filament of stamen is attached to the :
(1) Placenta (2) Thalamus or petal (3) Anther (4) Connective
Ans: 2