WBJEE - 2009 - Biology
1. The length of DNA having 23 base pair is
(A) 78 Å (B) 78.4 Å (C) 74.8 Å (D) 78.2 Å
2. Which Ig is produced in primary immune response ?
(A) IgA (B) IgE (C) IgG (D) IgM
3. The average diameter of Red Blood Corpuscles of man is
(A) 7.2 μ m (B) 8.1 μm (C) 9.2 μm (D) 10.3 μm
4. FAD is electron acceptor during oxidation of which of the following ?
(A) α -ketoglutarate → Succinyl CoA (B) Succinic acid → Fumaric acid
(C) Succinyl CoA → Succinic acid (D) Fumaric acid → Malic acid
5. The chemical nature of hormones secreted by α & δ cells of pancreas is –
(A) Glycolipid (B) Glycoprotein (C) Steroid (D) Polypeptide
6. The genetic material of Rabies virus is
(A) Double stranded RNA (B) Single stranded RNA (C) Double stranded DNA (D) ssDNA
7. T-lymphocyte is produced in
(A) Bone marrow (B) Spleen (C) Pancreas (D) Thymus
8. How many ATP molecules are obtained from fermentation of 1 molecule of glucose ?
(A) 2 (B) 4 (C) 3 (D) 5
9. Number of nitrogenous bases in a Codon is
(A) 3 (B) 2 (C) 1 (D) 5
10. A character which is expressed in a hybrid is called
(A) Dominant (B) Recessive (C) Co-dominant (D) Epistatic
11. In which stage of cell division chromosomes are most condensed ?
(A) Prophase (B) Metaphase (C) Anaphase (D) Telophase
12. Which of the following is correct
(A) Haemophilic-Y chromosome (B) Down’s syndrome - 21st chromosome
(C) Sickle cell anaemia-X chromosome (D) Parkinson’s disease-X and Y chromosome
13. Genetically engineered bacteria are being employed for production of
(A) Thyroxine (B) Human insulin (C) Cortisol (D) Epinephrine
14. Scientific name of sunflower is
(A) Hibiscus rosa-sinensis (B) Solanum nigram (C) Oryza sativa (D) Helianthus annus
15. By which of the following methods, new and better varieties of plants can be formed ?
(A) Selection (B) Grafting (C) Hybridization (D) Hybridization followed by selection
16. Which one is product of aerobic respiration ?
(A) Malic acid (B) Ethyl alcohol (C) Lactic acid (D) Pyruvic acid
17. CO2 acceptor in C3 cycle is
(A) OAA (B) RUBP (C) PEP (D) Malic acid
18. Virus was discovered by whom ?
(A) Stanley (B) Ivanowsky (C) Herelle (D) Beijerinek
19. Electron microscope is based on principle of
(A) Electromagnetic theory (B) Resolution of glass lenses
(C) Magnification of glass lenses (D) Refraction oflight
20. Citric acid cycle is the alternate name of which of the following ?
(A) HMP shunt (B) Glycolysis (C) TCA cycle (D) Calvin cycle
21. Vascular tissue in higher plants develop from which of the following :
(A) Procambium (B) Protoderm (C) Periblem (D) Cortex
22. Which element is cause of etai etai disease
(A) Hg (B) Pb (C) Cd (D) As
23. Chromosomes can be stained with one of the following chemicals
(A) Acetocarmine (B) Safranine (C) Light green (D) Eosin
24. Which one of the following is the American Poultry breed
(A) Australop (B) Minovca (C) Assel (D) Rhod Island Red
25. Which part of the human brain is largest :
(A) Cerebellum (B) Thlamus (C) Cerebrum (D) Medulla
26. When the other floral parts are arranged at the base of the gynoecium, the flower is called :
(A) Hypogynous flower (B) Perigynous flower (C) Epigynous flower (D) Agynous flower
27. In a CAM plant the concentration of organic acid :
(A) increases during the day (B) decreases or increases during the day
(C) increases during night (D) decreases during any time
28. Protein coat of virus is known as :
(A) Capsid (B) Virion (C) Virioid (D) Bacterial wall
29. Net yield of aerobic respiration during Krebs’ cycle per glucose molecule is :
(A) 2 ATP molecules (B) 8 ATP molecules (C) 36 ATP molecules (D) 38 ATP molecules
30. Feedback inhibition of enzymes is affected by which of the following
(A) enzyme (B) substrate (C) end products (D) intermediate end products
31. The discovery of gibberellins is related with one of the following :
(A) Blast disease of rice (B) Rust disease of wheat
(C) ‘Bakanae’ disease of rice (D) Early blight disease of potato
32. Ornithophily refers to the pollination by which of the following :
(A) Insects (B) Birds (C) Snails (D) Air
33. Which of the following is an example of man-made ecosystem ?
(A) Herbarium (B) Aquarium (C) Tissue culture (D) Forest
34. Respiratory enzymes are present in the following organelle :
(A) Peroxysome (B) Chloroplast (C) Mitochondrion (D) Lysosome
35. Pellagra is caused due to deficiency of the vitamin :
(A) Thiamin (B) Niacin (C) Pyridoxin (D) Biotin
36. Which one of the following Leucocytes transforms into macrophages ?
(A) Eosinophil (B) Basophil (C) Monocyte (D) Lymphocyte
37. Mention the “Incubation Period” of P.vivax :
(A) 10–14 days (B) 20–25 days (C) 30 days (D) 45 days
38. The specific region of Hypothalamus, responsible for physiological sweat secretion, is
(A) Para-ventricular nucleus (B) Supra-Optic nucleus (C) Median Eminence (D) Pars Distalis
39. The duration of cardiac cycle is :
(A) 0.8 sec (B) 0.8 μ sec (C) 0.08 sec (D) 0.008 sec
40. The intensity levels of whispering noise is :
(A) 10 – 15 dB (B) 20 – 40 dB (C) 45 – 50 dB (D) 50 – 55 dB
41. The wildlife Protection Act was introduced in :
(A) 1974 (B) 1981 (C) 1986 (D) 1991
42. In honey the percentage of Maltose and other sugar is
(A) 9.2 (B) 8.81 (C) 10.5 (D) 11.2
43. Identify the correct type of food chain : dead animal → blow fly maggots → common frog → snake
(A) Grazing food chain (B) Detrital food chain (C) Decomposer food chain (D) Predator food chain
44. Which is not applicable to the Biological species concept ?
(A) Hybridization (B) Natural population (C) Reproductive isolation (D) Gene Pool
45. DNA sequence that code for protein are known as —
(A) Introns (B) Exons (C) Control regions (D) Intervening sequences
46. Which one of the following is a systemic insecticide ?
(A) Malathion (B) Parathion (C) Endrin (D) Furadan
47. The resolving power of a compound microscope will increase with —
(A) decrease in wave length of light and increase in numerical aperture
(B) increase in wave length of light and decrease in numerical aperture
(C) increase in both wave length of light and numerical aperture
(D) decrease in both wave length of light and numerical aperture
48. Osteomalacia is a disease caused by the deficiency of —
(A) Calciferol (B) Retinol (C) Tocopherol (D) Phylloquinone
49. Which is the correct sequence of arrangement of types of W.B.C. in decreasing order in terms of numberper mm3 of human blood ?
(A) Eosinophils > Basophils > Neutrophils (B) Basophils > Eosinophils > Neutrophils
(C) Neutrophils > Eosinophils > Basophils (D) Eosinophils > Neutrophils > Basophils
50. Cells in G0 phase of cell cycle
(A) Exit cell cycle (B) Enter cell cycle (C) Suspend cell cycle (D) Terminate cell cycle
51. Choose the correct non-protein amino acid
(A) Hydroxyproline (B) hydroxylysine (C) cystine (D) γ amino butyric acid
52. Seedless Banana is
(A) Parthenocarpic fruit (B) Multiple fruit (C) Drupe fruit (D) True fruit
53. The major site of protein breakdown to form free amino acids is in the
(A) Kidney (B) Spleen (C) Liver (D) Bone-Marrow
54. Collagen is a
(A) Phosphoprotein (B) Globulin (C) Derived Protein (D) Scleroprotein
55. The “Repeating Unit” of glycogen is
(A) Fructose (B) Mannose (C) Glucose (D) Galactose
56. Graham’s Law is correlated with
(A) Diffusion (B) Osmoregulation (C) Osmosis (D) Adsorption
57. Which of the following does not act as a neurotransmitter ?
(A) Acetyl-choline (B) Glutamic acid (C) Epinephrine (D) Tyrosine
58. The generation of excitation-contraction coupling involves all the following events except :
(A) Generation of end-plate potential (B) Release of calcium from troponin
(C) Formation of cross-linkages between actin and myosin (D) Hydrolysis of ATP to ADP
59. In AIDS, HIV kills :
(A) Antibody molecule (B) THELPER cell (C) Bone-Marrow cells (D) TCytotoxic cell
60. Generally artificial Pacemaker consists of one battery made up of
(A) Nickel (B) Dry Cadmium (C) Photo Sensitive Material (D) Lithium
61. Goitre can occur as a consequence of all the following except :
(A) Iodine deficiency (B) Pituitary Adenoma
(C) Grave’s disease (D) Excessive intake of exogenous thyroxine
62. Pernicious anaemia results due to deficiency of
(A) Vit B1 (B) Vit A (C) Vit B12 (D) Iron
63. Which of the following substances yield less than 4 Kcal/mol when its phosphate bond is hydrolysed
(A) Creatine Phosphate (B) ADP (C) Glucose-6-Phosphate (D) ATP
64. The Genetic deficiency of ADH-receptor leads to
(A) Diabetes mellitus (B) Glycosuria (C) Diabetes Insipidus (D) Nephrogenic Diabetes
65. Out of A-T, G-C pairing, bases of DNA may exist in alternate valency state owing to arrangement called
(A) Tautomerisational mutation (B) Analogue substitution (C) Point mutation (D) Frameshift mutation
66. Cellular Totipotency was first demonstrated by
(A) F.C. Steward (B) Robert Hooke (C) T.Schwann (D) A.V. Leeuwenhock
67. Molecular scissors which cut DNA at specific site is
(A) Pectinase (B) Polymerase (C) Restriction endo nuclease (D) Ligase
68. SO2 pollution is indicated by
(A) Desmodium (Grasses) (B) Sphagnum (Mosses) (C) Usnea (Lichens) (D) Cucurbita (Climbers)
69. Sporopollenin is chemically
(A) Homopolysaccharide (B) Fatty substance (C) Protein (D) Heteropolysaccharide
70. During replication of DNA, Okazaki fragments are formed in the direction of :
(A) 3′ → 5′ (B) 5′ → 3′ (C) 5′ → 5′ (D) 3′ → 3′
71. The chemical nature of chromatin is as follows :
(A) Nucleic acids (B) Nucleid acid & histone proteins
(C) Nucleic acids, histone & non histone proteins (D) Nucleic acids & non-histone proteins
72. Choose the minor carp from the following :
(A) Cyprinus carpio (B) Labeo calbasu (C) Labeo bata (D) Ctenopharyngodon idella
73. The scientific name of Asian tiger mosquito :
(A) Aedes aegypti (B) Aedes albopictus (C) Aedes taeniorhynchus (D) Aedes albolineatus
74. The size of filtration slits of Glomerulus :
(A) 10 nm (B) 15 nm (C) 20 nm (D) 25 nm
75. Ornithorhynchus is an example of :
(A) Dinosaur (B) Monotreme mammal (C) Marsupial mammal (D) Eutherian mammal
76. Scirpophage incertulus is an example of :
(A) Monophagus pest (B) Diphagus pest (C) Oligophagus pest (D) Polyphagus pest
77. Which one of the following ancestors of man first time showed bipedal movement ?
(A) Australopithecus (B) Cro-magnon (C) Java apeman (D) Peking man
78. Trophic levels in ecosystem is formed by :
(A) only bacteria (B) only plants (C) only herbivores (D) Organisms linked in food chain
79. The life span of Honey bee drone is :
(A) 3 – 4 months (B) 1 – 2 months (C) 6 – 7 months (D) 10 – 12 months
80. Name of a gaseous plant hormone is
(A) IAA (B) Gibberellin (C) Ethylene (D) Abscisic acid
***
