Biology Question Paper-01-10-2020
| 1. | The first germinal layer formed in human embryo is _______. |
| | (1) | endoderm |
| | (2) | mesoderm |
| | (3) | trophoectoderm |
| | (4) | ectoderm |
CORRECT ANSWER
(1) endoderm
| 2. | Neuroglia cells show following characters EXCEPT |
| | (1) | Excitability |
| | (2) | Phagocytosis |
| | (3) | Nourishment |
| | (4) | Regeneration |
CORRECT ANSWER
(1) Excitability
| 3. | Struvite stones are derived from ________. |
| | (1) | urea |
| | (2) | guanine |
| | (3) | creatinine |
| | (4) | uric acid |
CORRECT ANSWER
(1) urea
| 4. | Who first suggested that the oxygen evolved by green plants comes from water and not from carbon dioxide? |
| | (1) | Park and Biggins |
| | (2) | Robert Hill |
| | (3) | C. Van Neil |
| | (4) | Dr. Arnon |
CORRECT ANSWER
(3) C. Van Neil
| 5. | In incomplete dominance each of the parental traits reappears in the F₂ generation by ______% |
| | (1) | 75 |
| | (2) | 50 |
| | (3) | 25 |
| | (4) | 100 |
CORRECT ANSWER
(3) 25
| 6. | The new field of biology, explored by HGP was |
| | (1) | hydroponics |
| | (2) | genomics |
| | (3) | eugenics |
| | (4) | proteonomics |
CORRECT ANSWER
(2) genomics
| 7. | Single turn of Krebs cycle yields_________. |
| | (1) | 3NADH₂, 1 FADH₂ and 1 GTP |
| | (2) | 4NADH₂, 1 FADH₂ and 2 GTP |
| | (3) | 4NADH₂, 2 FADH₂ and 2 GTP |
| | (4) | 3NADH₂ ,1 FADH₂ and 2 GTP |
CORRECT ANSWER
(1) 3NADH₂, 1 FADH₂ and 1 GTP
| 8. | Which one of the following shows interspecific competition? |
| | (1) | Between lions and leopards. |
| | (2) | Between tiger and camel |
| | (3) | Between tree and orchid |
| | (4) | Between two Peepal trees |
CORRECT ANSWER
(1) Between lions and leopards.
| 9. | Students of class XII were given a list of following characters such as clawed toes, curved beak, feathers, pneumatic bones, wings and fur. In this list, how many are volant adaptations? |
| | (1) | 4 |
| | (2) | 3 |
| | (3) | 5 |
| | (4) | 2 |
CORRECT ANSWER
(2) 3
| 10. | In the F₂ generation of a dihybrid cross of homozygous parents, the number of genotypes and phenotypes will be respectively ______. |
| | (1) | 9 and 16 |
| | (2) | 9 and 4 |
| | (3) | 16 and 9 |
| | (4) | 4 and 9 |
CORRECT ANSWER
(2) 9 and 4
| 11. | In sickle cell anaemia, the RBCs become half moon shaped due to ________ deficiency. |
| | (1) | carbon dioxide |
| | (2) | water |
| | (3) | haemoglobin |
| | (4) | oxygen |
CORRECT ANSWER
(4) oxygen
| 12. | The suspensor of the embryo in angiosperms develops from ______cell. |
| | (1) | embryonal |
| | (2) | lateral |
| | (3) | apical |
| | (4) | basal |
CORRECT ANSWER
(4) basal
| 13. | How many pollen grains can be produced from a dithecous tetra locular anther with 75 microspore mother cells in each of its chamber? |
| | (1) | 750 |
| | (2) | 300 |
| | (3) | 900 |
| | (4) | 1200 |
CORRECT ANSWER
(4) 1200
| 14. | The molecular weight of haemoglobin is ______ daltons. |
| | (1) | 28000 |
| | (2) | 68000 |
| | (3) | 38000 |
| | (4) | 48000 |
CORRECT ANSWER
(2) 68000
| 15. | Hugo de Vries proposed ‘Mutation theory’ by studying the plant __________. |
| | (1) | Mirabilis jalapa |
| | (2) | Oenothera lamarkiana |
| | (3) | Pisum sativum |
| | (4) | Antirrhinum majus |
CORRECT ANSWER
(2) Oenothera lamarkiana
| 16. | Simple tuberous roots help in vegetative propagation of _______. |
| | (1) | Murraya |
| | (2) | Sweet potato |
| | (3) | Dahlia |
| | (4) | Asparagus |
CORRECT ANSWER
(2) Sweet potato
| 17. | Both cell organelles namely nucleus and lysosomes are absent in _________. |
| | (1) | mature human R.B.Cs. |
| | (2) | R.B.Cs. of camel |
| | (3) | vertebrate liver cells |
| | (4) | Paramoecium |
CORRECT ANSWER
(1) mature human R.B.Cs.
| 18. | Which one of the following can form a nucleotide of DNA? |
| | (1) | Adenine +deoxyribose + phosphate |
| | (2) | Uracil + ribose + phosphate |
| | (3) | Uracil + deoxyribose + phosphate |
| | (4) | Thymine + ribose +phosphate |
CORRECT ANSWER
(1) Adenine +deoxyribose + phosphate
| 19. | Scala tympani of membranous labyrinth ends at A which opens into B. Identity A and B select correct option. |
| | (1) | A - oval window, B - pharynx |
| | (2) | A - round window, B - middle ear |
| | (3) | A - round window, B - external auditory meatus |
| | (4) | A - oval window, B - middle ear |
CORRECT ANSWER
(2) A - round window, B - middle ear
| 20. | Holandric genes are present on |
| | (1) | non- homologous part of X chromosome |
| | (2) | homologous part of X chromosome |
| | (3) | homologous part of Y chromosome |
| | (4) | non- homologous part of Y chromosome |
CORRECT ANSWER
(4) non- homologous part of Y chromosome
| 21. | An adult man feels excessive thirst and excretes large volume of dilute urine. He may be suffering from ______. |
| | (1) | acromegaly |
| | (2) | Addison’s disease |
| | (3) | diabetes insipidus |
| | (4) | myxoedema |
CORRECT ANSWER
(3) diabetes insipidus
| 22. | The pCO₂ of inspired air is ______ mm Hg during external respiration. |
| | (1) | 80 |
| | (2) | 30 |
| | (3) | 40 |
| | (4) | 100 |
CORRECT ANSWER
(3) 40
| 23. | Most important photosynthetic pigments in higher plants are |
| | (1) | chlorophylls |
| | (2) | anthocyanin |
| | (3) | carotenoids |
| | (4) | phycobilins |
CORRECT ANSWER
(1) chlorophylls
| 24. | In the secondary treatment of’STP the masses of bacteria associated with fungal filaments are called ______. |
| | (1) | hyphae |
| | (2) | mycelium |
| | (3) | flakes |
| | (4) | flocs |
CORRECT ANSWER
(4) flocs
| 25. | Gross primary productivity of an ecosystem is estimated in terms of________. |
| | (1) | C g/m²/day |
| | (2) | C g dry wt./unit area |
| | (3) | Chl /g dry wt./m²/day |
| | (4) | Chl/g dry wt./unit area |
CORRECT ANSWER
(4) Chl/g dry wt./unit area
| 26. | Cotton is protected from boll worm by using bacterium. |
| | (1) | Rhizobium leguminosarum |
| | (2) | Bacillus thuringiensis |
| | (3) | Escherichia coli |
| | (4) | Salmonella typhimurium |
CORRECT ANSWER
(2) Bacillus thuringiensis
| 27. | Neurogenic heart receives stimulus for contraction from ______ fibres. |
| | (1) | collagen |
| | (2) | muscle |
| | (3) | elastin |
| | (4) | nerve |
CORRECT ANSWER
(4) nerve
| 28. | The large number of genetically identical offsprings produced by micropropagation are called ______. |
| | (1) | drones |
| | (2) | clones |
| | (3) | twins |
| | (4) | siblings |
CORRECT ANSWER
(2) clones
| 29. | Sewall Wright effect is ________________. |
| | (1) | changes in chemical make up of a gene |
| | (2) | transfer of genes between populations |
| | (3) | exchange of genetic material between communities |
| | (4) | any alteration in allele frequency of a natural population by pure chance |
CORRECT ANSWER
(4) any alteration in allele frequency of a natural population by pure chance
| 30. | The commercial hatcheries provide _____ day old chicks for poultry practices. |
| | (1) | 2 |
| | (2) | 3 |
| | (3) | 4 |
| | (4) | 1 |
CORRECT ANSWER
(4) 1
| 31. | One of the factors which may help to differentiate chronic kidney disease from acute kidney injury is ______. |
| | (1) | small kidney size |
| | (2) | deranged acid levels |
| | (3) | abnormal fluid levels |
| | (4) | proteinuria |
CORRECT ANSWER
(1) small kidney size
| 32. | Which one of the following is NOT purely a nitrogenous base? |
| | (1) | Guanosine |
| | (2) | Thymine |
| | (3) | Cytosine |
| | (4) | Adenine |
CORRECT ANSWER
(1) Guanosine
| 33. | If a colour blind man marries a normal visioned woman, what is the percentage of offsprings showing colour blindness phenotypically? |
| | (1) | 100 % |
| | (2) | 25% |
| | (3) | 50% |
| | (4) | 0% |
CORRECT ANSWER
(4) 0%
| 34. | Which one is used as biofertilizer in paddy fields? |
| | (1) | Nostoc |
| | (2) | Azotobacter |
| | (3) | Chlorella |
| | (4) | Rhizobium |
CORRECT ANSWER
(1) Nostoc
| 35. | During Krebs cycle, the intermediate `prop` - ketoglutarate is formed as a result of______. |
| | (1) | hydration of oxalosuccinate |
| | (2) | oxidation of cis-aconitate |
| | (3) | oxidation of succinyl co-A |
| | (4) | decarboxylation of oxalosuccinate |
CORRECT ANSWER
(4) decarboxylation of oxalosuccinate
| 36. | Johann Mendel is considered a genius much ahead of times, as he has given the concept of “factors” now called genes, is based on the fact that ______. |
| | (1) | he gave the concept before the discovery of mitosis, meiosis and chromosomes. |
| | (2) | he was the first to conduct experiments in plant hybridization. |
| | (3) | he was the first to suggest the concept |
| | (4) | he was the first to use a microscope. |
CORRECT ANSWER
(1) he gave the concept before the discovery of mitosis, meiosis and chromosomes.
| 37. | Reduced coenzyme FADH2 is formed between which of the following intermediates in Krebs Cycle? |
| | (1) | Malate and oxaloacetate |
| | (2) | Succinate and fumarate |
| | (3) | Isocitrate and oxalosuccinate |
| | (4) | Fumarate and malate |
CORRECT ANSWER
(2) Succinate and fumarate
| 38. | In inflammatory response, A and B are released by damaged mast cells and basophils. |
| | (1) | A - histamines, B - lymphokines |
| | (2) | A - lymphokines, B - perforins |
| | (3) | A - perforins, B - interferons |
| | (4) | A - histamines, B - prostaglandins |
CORRECT ANSWER
(4) A - histamines, B - prostaglandins
| 39. | The cell given in the diagram below is showing shrunken protoplasm, which one of the following is an INCORRECT statement regarding this cell? |
|  |
| | (1) | The cell was placed in hypertonic solution. |
| | (2) | The cell has decreased turgor pressure and increased osmotic pressure |
| | (3) | The cell is plasmolyzed |
| | (4) | The cell was placed in hypotonic solution |
CORRECT ANSWER
(4) The cell was placed in hypotonic solution
| 40. | Dark yellow urine, whitish stools, itching of skin, pale face etc. are main symptoms of______. |
| | (1) | diarrhoea |
| | (2) | Kwashiorkor |
| | (3) | constipation |
| | (4) | Jaundice |
CORRECT ANSWER
(4) Jaundice
| 41. | Which group of plants do NOT contain vascular tissue? |
| | (1) | Pteridophytes |
| | (2) | Bryophytes |
| | (3) | Angiosperms |
| | (4) | Gymnosperms |
CORRECT ANSWER
(2) Bryophytes
| 42. | An elephant produces six young ones in its life span of 100 years. If this continues, then, in 750 years, 19 million elephants will be produced. It is NOT possible in reality mainly due to ______. |
| | (1) | mutualism |
| | (2) | competition |
| | (3) | mutation |
| | (4) | prodigality |
CORRECT ANSWER
(2) competition
| 43. | Which group of drugs is normally used as medicine? |
| | (1) | Marijuana, charas, ganja |
| | (2) | LSD, cocaine, heroin |
| | (3) | Barbiturates; amphetamines; benzodiazepine |
| | (4) | Morphine, cocaine, hashish |
CORRECT ANSWER
(3) Barbiturates; amphetamines; benzodiazepine
| 44. | Which one of the following elements is an important binding agent in ribosomes during protein synthesis? |
| | (1) | Phosphorus |
| | (2) | Manganese |
| | (3) | Magnesium |
| | (4) | Sulphur |
CORRECT ANSWER
(3) Magnesium
| 45. | In the reproductive system of a male human being, the ejaculatery ducts open into ______. |
| | (1) | spongial urethra |
| | (2) | membranous urethra |
| | (3) | prostatic urethra |
| | (4) | penile urethra |
CORRECT ANSWER
(3) prostatic urethra
| 46. | The law of purity of gametes is universally applicable because the gametes_ |
| | (1) | always have a recessive allele. |
| | (2) | always have a dominant allele. |
| | (3) | are never identical. |
| | (4) | receive only one of the allelic pairs. |
CORRECT ANSWER
(4) receive only one of the allelic pairs.
| 47. | Match the following therapeutic products formed by r DNA technology |
| | | A | | B |
| | a - | Blood proteins | i | Hepatitis B |
| | b - | Human hormones | ii | Lysozyme |
| | c - | Immuno modulators | iii | Insulin |
| | d - | Vaccine | iv | Urokinase |
| |
| | (1) | a - i, | b-iv, | c -ii, | d-iii |
| | (2) | a - iii, | b-i, | c -iv, | d-ii |
| | (3) | a - ii, | b-iv, | c -i, | d-iii |
| | (4) | a - iv, | b-iii, | c -ii, | d-i |
| |
CORRECT ANSWER
(4) a - iv, b-iii, c -ii, d-i
| 48. | Larger DNA molecule CANNOT be inserted in host bacterial cell by using ________. |
| | (1) | lambda phage |
| | (2) | M 13 phage |
| | (3) | plasmid |
| | (4) | cosmid |
CORRECT ANSWER
(3) plasmid
| 49. | The deposition of pesticides in fatty tissue of the organisms is called ________. |
| | (1) | biodegradation |
| | (2) | bioconcentration |
| | (3) | biomagnification |
| | (4) | bioaccumulation |
CORRECT ANSWER
(4) bioaccumulation
| 50. | Mucilagenous disc is useful for attachment with the substratum in the members of ______ lichen. |
| | (1) | shruby |
| | (2) | foliose |
| | (3) | fruticose |
| | (4) | crustose |
CORRECT ANSWER
(3) fruticose
| 51. | The megasporangium in angiosperms is usually. |
| | (1) | polytegmic |
| | (2) | bitegmic |
| | (3) | unitegmic |
| | (4) | tritegmic |
CORRECT ANSWER
(2) bitegmic
| 52. | Following are classified as plasma proteins EXCEPT |
| | (1) | prothrombin |
| | (2) | thromboplastin |
| | (3) | albumin |
| | (4) | fibrinogen |
CORRECT ANSWER
(2) thromboplastin
| 53. | When stimulus is applied to a membrane of neuron, it causes rapid influx of ________. |
| | (1) | K⁺ |
| | (2) | Ca⁺⁺ |
| | (3) | Mg⁺⁺ |
| | (4) | Na⁺ |
CORRECT ANSWER
(4) Na⁺
| 54. | Which one of the following is a carbohydrate but does NOT follow the general formula of carbohydrate? |
| | (1) | Fructose |
| | (2) | Lactose |
| | (3) | Rhamnose |
| | (4) | Glucose |
CORRECT ANSWER
(3) Rhamnose
| 55. | Genome of an organism CANNOT be altered by________. |
| | (1) | gene manipulation |
| | (2) | mutation |
| | (3) | genetic engineering |
| | (4) | cloning |
CORRECT ANSWER
(4) cloning
| 56. | One of the following is NOT a thyroid hormone. It is ________. |
| | (1) | tyrosine |
| | (2) | tetraiodothyronine |
| | (3) | triiodothyronine |
| | (4) | thyrocalcitonin |
CORRECT ANSWER
(1) tyrosine
| 57. | The sound producing organ in human respiratory system is ____________. |
| | (1) | trachea |
| | (2) | larynx |
| | (3) | tongue |
| | (4) | pharynx |
CORRECT ANSWER
(2) larynx
| 58. | In the following reaction ‘X’ stands for ______. |
| CO₂ + 2NADPH2 + 2ATP → (CH₂O) + 'X' + 2NADP + 2ADP + 2ip |
| | (1) | CO₂ |
| | (2) | ATP |
| | (3) | H₂O |
| | (4) | O₂ |
CORRECT ANSWER
(3) H₂O
| 59. | _________ is obtained from fermented grains of mostly barley. |
| | (1) | Beer |
| | (2) | Rum |
| | (3) | Wine |
| | (4) | Whisky |
CORRECT ANSWER
(1) Beer
| 60. | Which one of the following shows clover leaf model? |
| | (1) | t-RNA |
| | (2) | m-RNA |
| | (3) | r-RNA |
| | (4) | DNA |
CORRECT ANSWER
(1) t-RNA
| 61. | During tissue culture, the growth hormones are provided to callus to induce ________. |
| | (1) | organogenesis |
| | (2) | separation of cells |
| | (3) | callose formation |
| | (4) | formation of secondary metabolites |
CORRECT ANSWER
(1) organogenesis
| 62. | The fungi are separated from kingdom plantae on the basis of________. |
| | (1) | cell organization |
| | (2) | mode of nutrition |
| | (3) | body organization |
| | (4) | ecological role |
CORRECT ANSWER
(2) mode of nutrition
| 63. | The endodermal cells show Casparian strips made up of |
| | (1) | suberin |
| | (2) | cutin |
| | (3) | cellulose |
| | (4) | pectin |
CORRECT ANSWER
(1) suberin
| 64. | Select the mis-match pair |
| | (1) | Planarians - Regeneration |
| | (2) | Ephydatia - Gemmule formation |
| | (3) | Ascidians - Gemmule formation |
| | (4) | Hydra – Budding |
CORRECT ANSWER
(3) Ascidians - Gemmule formation
| 65. | Right atrium: coronary sinus :: left atrium: ________. |
| | (1) | coronary artery |
| | (2) | inferior venacava |
| | (3) | pulmonary vein |
| | (4) | pulmonary artery |
CORRECT ANSWER
(3) pulmonary vein
| 66. | A better conserver of water with respect to excretion of nitrogenous waste is ______. |
| | (1) | tadpole larva of frog |
| | (2) | turtle |
| | (3) | lizard |
| | (4) | toad |
CORRECT ANSWER
(3) lizard
| 67. | The ventricular diastole has a duration of ______ seconds. |
| | (1) | 0.8 |
| | (2) | 0.1 |
| | (3) | 0.5 |
| | (4) | 0.3 |
CORRECT ANSWER
(3) 0.5
| 68. | White coating material called enamel covers ______ of tooth |
| | (1) | crown |
| | (2) | periodontal ligament |
| | (3) | central cavity |
| | (4) | root |
CORRECT ANSWER
(1) crown
| 69. | Silage supplemented with oil cakes, vitamins etc makes up good feed for rearing breeds of ______. |
| | (1) | silkworm |
| | (2) | buffalo |
| | (3) | carp |
| | (4) | fowl |
CORRECT ANSWER
(2) buffalo
| 70. | Which pair of blood corpuscles is non-phagocytic? |
| | (1) | Eosinophil and Basophil |
| | (2) | Monocyte and Eosinophil |
| | (3) | Monocyte and Lymphocyte |
| | (4) | Neutrophil and Lymphocyte |
CORRECT ANSWER
(1) Eosinophil and Basophil
| 71. | Semi dwarf rice varieties were developed from ______ in Philippines. |
| | (1) | IR -2 |
| | (2) | IR -8 |
| | (3) | IR -4 |
| | (4) | IR -6 |
CORRECT ANSWER
(2) IR -8
| 72. | Genome of a prokaryotic cell is ___________. |
| | (1) | total number of genes on sex chromosome |
| | (2) | genes contained in diploid number of chromosomes |
| | (3) | genes contained in the plasmid |
| | (4) | total number of genes present in the chromosome |
CORRECT ANSWER
(4) total number of genes present in the chromosome
| 73. | The monitoring stations, established by NEERI, have reported that Kolkata and New Delhi have highest _____ and _____ in air respectively. |
| | (1) | sulphur dioxide, suspended particulate matter |
| | (2) | carbon monoxide, suspended particulate matter |
| | (3) | carbon monoxide, nitrogen dioxide |
| | (4) | carbon monoxide, sulphur dioxide |
CORRECT ANSWER
(2) carbon monoxide, suspended particulate matter
| 74. | Identify the WRONG match of the crop variety and its resistance to pest or disease. |
| | (1) | Pusa Gaurav ---- aphids |
| | (2) | Pusa sadabahar ---- stem borer and aphids |
| | (3) | Pusa Shubhra ---- curl blight and black rot. |
| | (4) | Pusa Sawni and Pusa A4 ---- Shoot and fruit borer |
CORRECT ANSWER
(2) Pusa sadabahar ---- stem borer and aphids
| 75. | During Calvin cycle, phosphoglyceraldehyde is formed from 1,3di.PGA by ___________. |
| | (1) | oxidation |
| | (2) | phosporylation |
| | (3) | oxidative decarboxylation |
| | (4) | reduction |
CORRECT ANSWER
(4) reduction
| 76. | During the development of embryo sac, a megaspore mother cell undergoes ____ meiosis and ____ mitosis respectively. |
| | (1) | 4, 1 |
| | (2) | 3, 1 |
| | (3) | 1, 3 |
| | (4) | 1, 4 |
CORRECT ANSWER
(3) 1, 3
| 77. | After birth, infant receives antibodies IgA through colostrum from mother. This is an example of ______ immunity. |
| | (1) | natural acquired active |
| | (2) | natural acquired passive |
| | (3) | innate (natural) |
| | (4) | artificial acquired passive |
CORRECT ANSWER
(2) natural acquired passive
| 78. | The glans penis is a derivative of ______. |
| | (1) | corpus albicans |
| | (2) | corpora cavernosa |
| | (3) | corpus callosum |
| | (4) | corpus spongiosum |
CORRECT ANSWER
(4) corpus spongiosum
| 79. | Two consecutive nucleotides of a nucleic acid are linked with _____ bond. |
| | (1) | hydrogen |
| | (2) | glycosidic |
| | (3) | peptide |
| | (4) | phospho-di-ester |
CORRECT ANSWER
(4) phospho-di-ester
| 80. | Epihydrophily is observed in which of the following plants? |
| | (1) | Ceratopbyllum |
| | (2) | Zostera |
| | (3) | Lotus |
| | (4) | Vallisneria |
CORRECT ANSWER
(4) Vallisneria
| 81. | Normally a somatic cell in human beings contains ______ number of chromosomes. |
| | (1) | 8 |
| | (2) | 32 |
| | (3) | 46 |
| | (4) | 16 |
CORRECT ANSWER
(3) 46
| 82. | Mark the CORRECT sequence of structures in the breast from inner to outer side. |
| | (1) | Lactiferous glands → Lactiferous Sinuses → Lactiferous ducts |
| | (2) | Lactiferous glands → Lactiferous ducts → Lactiferous Sinuses |
| | (3) | Lactiferous Sinuses → Lactiferous ducts → Lactiferous glands |
| | (4) | Lactiferous ducts → Lactiferous Sinuses → Lactiferous glands |
CORRECT ANSWER
(2) Lactiferous glands → Lactiferous ducts → Lactiferous Sinuses
| 83. | The technique developed to identify a person with the help of DNA restriction analysis is ______. |
| | (1) | DNA profiling |
| | (2) | r-DNA technology |
| | (3) | Cloning |
| | (4) | restriction digestion |
CORRECT ANSWER
(1) DNA profiling
| 84. | CO₂ concentrating mechanism is NOT seen in ______. |
| | (1) | Maize |
| | (2) | Gram |
| | (3) | Amaranthus |
| | (4) | Jowar |
CORRECT ANSWER
(2) Gram
| 85. | In human beings, usually the gestation period lasts for about ______ days, from beginning of the last menstrual cycle. |
| | (1) | 243 |
| | (2) | 266 |
| | (3) | 256 |
| | (4) | 280 |
CORRECT ANSWER
(4) 280
| 86. | Entry of a pollen tube in an ovule through its micropyle during fertilization is called ______. |
| | (1) | chalazogamy |
| | (2) | mesogamy |
| | (3) | porogamy |
| | (4) | cleistogamy |
CORRECT ANSWER
(3) porogamy
| 87. | The anticoagulant ‘heparin’ is secreted by___________. |
| | (1) | macrophages |
| | (2) | fibroblasts |
| | (3) | mast cells |
| | (4) | adipocytes |
CORRECT ANSWER
(3) mast cells
| 88. |  |
| In the above diagram, the blood vessel pointed ‘X’ communicates with ________ and carries ____ blood. |
| | (1) | right ventricle, oxygenated |
| | (2) | right atrium, deoxygenated |
| | (3) | left ventricle, oxygenated |
| | (4) | left atrium, deoxygenated |
CORRECT ANSWER
(2) right atrium, deoxygenated
| 89. | A sudden rise in the level of LH, stimulates _______. |
| | (1) | degeneration of uterine endometrium |
| | (2) | secretion of uterine milk |
| | (3) | secretion of estrogen |
| | (4) | ovulation |
CORRECT ANSWER
(4) ovulation
| 90. | During phase of cell enlargement in plant growth, solute concentration favours ________. |
| | (1) | imbibition |
| | (2) | exosmosis |
| | (3) | plasmolysis |
| | (4) | endosmosis |
CORRECT ANSWER
(4) endosmosis
| 91. | During aerobic respiration, the total number of ATP formed through oxidative phosphorylation / ETS from one glucose molecule is ______. |
| | (1) | thirty eight |
| | (2) | eight |
| | (3) | thirty |
| | (4) | thirty four |
CORRECT ANSWER
(4) thirty four
| 92. | A population is a group of all ______ in a given time. |
| | (1) | plants only |
| | (2) | individuals on this planet |
| | (3) | animals only |
| | (4) | individuals belonging to same species |
CORRECT ANSWER
(4) individuals belonging to same species
| 93. | Identify the correct sequence of seral stages in the Xerarch Succession. |
| | (1) | lichens → mosses → herbs → shrubs → trees |
| | (2) | mosses → lichens → herbs → shrubs → trees |
| | (3) | lichens → herbs → mosses → shrubs → trees |
| | (4) | herbs → shrubs → mosses → lichens → trees |
CORRECT ANSWER
(1) lichens → mosses → herbs → shrubs → trees
| 94. | Among the following respiratory substrates, which one is the main source of energy? |
| | (1) | Carbohydrates |
| | (2) | Fats |
| | (3) | Proteins |
| | (4) | Organic acids |
CORRECT ANSWER
(1) Carbohydrates
| 95. | Control and co-ordination of head movements in response to visual and auditory stimuli is carried out by ______. |
| | (1) | corpora cavernosa |
| | (2) | crura cerebrii |
| | (3) | corpora quadrigemina |
| | (4) | corpora striata |
CORRECT ANSWER
(3) corpora quadrigemina
| 96. | Which of the following is NOT an ectodermal derivative? |
| | (1) | Enamel of teeth |
| | (2) | Adrenal cortex |
| | (3) | Retina |
| | (4) | Stomodaeum |
CORRECT ANSWER
(2) Adrenal cortex
| 97. | Select the INCORRECT statement. |
| | (1) | Microfilaments are composed of protein keratin. |
| | (2) | Intermediate filaments provide tensile strength to the cell. |
| | (3) | The components of cytoskeleton are microfilaments, microtubules and intermediate filaments. |
| | (4) | During cell division, the spindle fibres originate from microtubules. |
CORRECT ANSWER
(1) Microfilaments are composed of protein keratin.
| 98. | Select homologous organs from the following. |
| | (1) | Wings of birds and insects |
| | (2) | Forelimbs of lizard and wings of birds |
| | (3) | Wings of pterodactyl and insect |
| | (4) | Vermiform appendix and sacrum in human |
CORRECT ANSWER
(2) Forelimbs of lizard and wings of birds
| 99. | Viviparous germination is seen in__________. |
| | (1) | hydrophytes |
| | (2) | mesophytes |
| | (3) | xerophytes |
| | (4) | halophytes |
CORRECT ANSWER
(4) halophytes
| 100. | Capacity of living nucleated cell to differentiate into any other type of cell and form a complete new organism is called ______. |
| | (1) | polymorphism |
| | (2) | heterophagy |
| | (3) | totipotency |
| | (4) | autophagy |
CORRECT ANSWER
(3) totipotency
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