Joint Biology Question

7/31/2019 Joint Biology Question

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Subject: Biological Sciences

Duration : Two HoursMaximum Marks : 100

Q.1 - Q. 60 carry one mark each.

1. Numerical aperture of microscope lens is expressed by

(A) Angular aperture only

(B) Refractive index only

(C) Both angular aperture and refractive index

(D) Wave length of the light used

2. Which one of the following is not true for enzymes ?

(A) They act on a specific substrate

(B) They are made up of fat and sugar

(C) They act at a specific temperature


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(D) They act at a specific pH

3. Living cells placed in isotonic solution (0.9% saline) retain their size andshape. This is based on the concept of

(A) Osmosis

(B) Diffusion

(C) Facilitated diffusion

(D) Transpiration

4. Identify the polysaccharide with -glycosidic bond

(A) Starch

(B) Glycogen

(C) Sucrose

(D) Cellulose


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5. Simple storage protein that coagulates upon heating but remains soluble indilute salt solution is correctly exemplified by

(A) Globulin

(B) Albumin

(C) Histone

(D) Collagen

6. Melting of DNA at an elevated temperature (70C) is primarily due to

the breakdown of

(A) Phosphodiester bonds

(B) Glycosidic bonds

(C) Disulfide bonds

(D) Hydrogen bonds


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7. N-acetyl muramic acid is found in

(A) Cell wall component of plant

(B) Cell wall component of Gram positive bacteria

(C) Cell wall component of fungi

(D) Viral coat material

8. Identify the bacterium that appears violet after Gram staining

(A) Salmonella enterica

(B) Escherichia coli

(C) Mycobacterium tuberculosis

(D) Rhizobium meliloti

9. The usual source of restriction endonucleases used in gene cloning is from


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(A) Fungi

(B) Bacteria

(C) Plants

(D) Viruses

10. Portion of apical meristem that gives rise to xylem tissue is called

(A) Protoxylem

(B) Procambium

(C) Metaxylem

(D) Tracheid

11. For a clean environment, which one of the following is not essential ?

(A) Producer


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(B) Consumer

(C) Decomposer

(D) Polluter

12. Inulin is a type of

(A) Protein

(B) Carbohydrate

(C) Lipid

(D) Nucleic acid

13. Higher animals cannot synthesize few fatty acids which are very essentialfor their growth and development. These fatty acids are typically

(A) Saturated

(B) Cyclic


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(C) Unsaturated

(D) Branched

14. Identify the membrane across which the proton (H+) gradient facilitatesATP synthesis in a typical eukaryotic cell.

(A) Plasma membrane

(B) Mitochondrial inner membrane

(C) Mitochondrial outer membrane

(D) Nuclear membrane

15. What is the substrate for lipase enzyme ?

(A) Protein

(B) Carbohydrate

(C) Lipid


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(D) Nucleic acid

16. In higher plants, continuity of cytoplasm from one cell to its neighbouringcells is established through

(A) Apoplast

(B) Chloroplast

(C) Leucoplast

(D) Symplast

17. In plant tissue culture, the callus tissues can be regenerated intocomplete plantlets primarily by altering the concentration of

(A) Sugars

(B) Vitamins

(C) Amino acids

(D) Hormones


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18. If you want to develop hybrid seeds within a bisexual flower, the followingpart needs to be removed from the same flower

(A) Stigma

(B) Ovary

(C) Anther

(D) Oviduct

19. Xenogamy is essentially a type of

(A) Cleistogamy

(B) Allogamy

(C) Autogamy

(D) Homogamy


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20. Basic principle of developing transgenic plants and animals is to introducethe gene of interest into the nucleus of

(A) Somatic cell

(B) Vegetative cell

(C) Germ cell

(D) Body cell

21. Who is regarded as the Father of Taxonomy ?

(A) John Ray

(B) Carolus Linnaeus

(C) A.P. deCandolle

(D) Charles Darwin

22. Which pair of the following diseases are caused by two genes located on


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human X chromosome ?

(A) Colour blindness and Phenylketonuria

(B) Colour blindness and Haemophilia

(C) Colour blindness and Albinism

(D) Colour blindness and Hypertrichosis

23. Which one of the following triplet codon is known as initiation codon ?

(A) UUU

(B) UAA

(C) AUG

(D) UGA

24. Muga silk worm feeds on

(A) Shorea


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(B) Terminalia

(C) Machilus

(D) Morus

25. Mammals have originated from which of the following

(A) Pisces

(B) Amphibia

(C) Reptilia

(D) Aves

26. Which one of the following animal phyla possesses spicule ?

(A) Annelida

(B) Mollusca


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(C) Porifera

(D) Platyhelminthes

27. Fin rot of fish is caused by

(A) Aeromonas

(B) Pseudomonas

(C) Branchiomyces

(D) Xenopsylla

28. Which one of the following animal possesses giant chromosome ?

(A) Drosophila

(B) Mouse

(C) Pigeon


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(D) Elephant

29. The vein which is formed from the capillaries of an organ and terminatesinto capillaries in some other organ before entering the heart is called

(A) Pulmonary vein

(B) Coronary vein

(C) Portal vein

(D) Systemic vein

30. Which one of the following genus of insects prefer to breed in clean waterand their larvae lie parallel to the surface of water ?

(A) Anopheles

(B) Culex

(C) Aedes


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(D) Phlebotomus

31. Which one of the following life cycle stages of Wuchereria bancrofti isinfective to man ?

(A) Microfilaria

(B) 1st stage larva

(C) 2nd stage larva

(D) 3rd stage larva

32. Which one of the following life cycle stages of malarial parasite isresponsible for relapse of malarial symptoms ?

(A) Merozoite

(B) Sporozoite

(C) Hypnozoite

(D) Gametocyte


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33. The correct sequence of different phases of cell cycle is

(A) S - G1 - G2 - M

(B) G1 - S - G2 - M

(C) G2 - S - G1 - M

(D) G1 - G2 - S - M

34. Which one of the following poultry birds is not an English breed ?

(A) Sussex

(B) Australorp

(C) Orpington

(D) Minorca


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35. The important gas which was absent during the formation of earth is

(A) Oxygen gas

(B) Hydrogen gas

(C) Nitrogen gas

(D) Carbon dioxide gas

36. In spermatogenesis, reduction division of chromosome occurs duringconversion of

(A) Spermatogonia to primary spermatocytes

(B) Primary spermatocytes to secondary spermatocytes

(C) Secondary spermatocytes to spermatids

(D) Spermatids to sperms

37. The carcinoma, a type of cancer, originates from


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(A) Blood

(B) Connective tissue

(C) Epithelial tissue

(D) Lymph gland

38. Homo erectus evolved during

(A) Oligocene

(C) Pleistocene

(B) Pliocene

(D) Miocene

39. Which one of the following is not included under in situ conservation ?

(A) National park

(B) Wild life sanctuary

(C) Zoological garden


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(D) Biosphere reserve

40. Animals are classified into hierarchical groups. In which one of thefollowing, the largest number of species is found ?

(A) Genus

(B) Order

(C) Family

(D) Cohort

41. The blood vessel which supply oxygenated blood to cardiac tissue is

(A) Coronary artery

(B) Coronary vein

(C) Coronary sinus

(D) Pulmonary vein


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42. Vegus nerve is a

(A) Mixed Xth cranial nerve

(B) Mixed XIth cranial nerve

(C) Mixed Xth thoracic nerve

(D) Sensory Xth cranial nerve

43. The number of spinal nerves in human is

(A) 10 pairs

(B) 12 pairs

(C) 43 pairs

(D) 31 pairs


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44. Third and fourth ventricles of the brain are connected by

(A) Aqueduct of Sylvious

(B) Foramen of Monro

(C) Foramen of Magnum

(D) Corpus Collosum

45. All or none law is not applicable for

(A) Whole skeletal muscle

(B) Single skeletal muscle fibre

(C) Whole cardiac muscle

(D) Single smooth muscle fibre

46. After forceful inspiration, the amount of air that can be breathed out bymaximum forced expiration is equal to


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(A) Inspiratory Reserve Volume (IRV) + Expiratory Reserve Volume (ERV) + Tidal Volume (TV) + Residual Volume (RV)

(B) IRV + RV + ERV

(C) IRV + TV + ERV

(D) TV + RV + ERV

47. Amount of oxygen supplied by 100 ml arterial blood while passing throughthe tissues is

(A) 0.4-0.6 ml

(B) 4-6 ml

(C) 14-15 ml

(D) 19-20 ml

48. Cholecystokinin stimulates the secretion of


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(A) Bile

(B) Gastric juice

(C) Pancreatic juice

(D) Succus entericus

49. In a normal adult human, the average cardiac output (stroke volume) is

(A) 47 ml

(B) 70 ml

(C) 5 litre

(D) 3.3 litre

50. Humoral immunity is mediated by

(A) Cytotoxic T-cell


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(B) Plasma cell

(C) Eosinophil

(D) Neutrophil

51. The expanded name of MRI is

(A) Medical Research Instrument

(B) Magnetic Resonance Imaging

(C) Magnetic Research Institute

(D) Medical Resonance Imaging

52. The volume of Anatomical Dead Space air is normally

(A) 230 ml

(B) 210 ml


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(C) 190 ml

(D) 150 ml

53. Bone is mainly composed of

(A) Iron and Phosphorus

(B) Sulphur and Calcium

(C) Calcium and Phosphorus

(D) Calcium and Magnesium

54. Which one of the following is incorrect for Atherosclerosis ?

(A) Constriction of arterial luman reduces the blood flow

(B) Loss of dilatation ability of the arterial wall and its rupture

(C) Cholesterol deposition at the inner wall of the artery


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(D) Proliferation of the vascular muscles

55. Which one of the following statement is incorrect ?

(A) Glucagon is secreted by pancreas

(B) Androgen is produced by ovary

(C) Thyroxine is secreted by thyroid

(D) Oxytocin is secreted by pituitary

56. Juxtaglomerular apparatus is made up of

(A) Juxtaglomerular cell, Macula densa and Lacis cell

(B) Juxtaglomerular cell, Purkinjee cell and Chief cell

(C) Juxta-glomerular cell, Lacis cell and Myoepithelial cell

(D) Juxta-glomerular cell, Macula densa and Argentaffin cell


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57. Which vitamin helps in blood coagulation ?

(A) Vitamin K

(B) Vitamin C

(C) Vitamin A

(D) Vitamin D

58. Presence of which of the following hormone in the urine confirmspregnancy ?

(A) Progesterone

(B) Estrogen

(C) Human chorionic gonadotropin

(D) Prolactin


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59. Which one of the following is mainly responsible for the second heartsound ?

(A) Closure of atrioventricular valves

(B) Opening of atrioventricular valves

(C) Closure of semilunar valves

(D) Thrust of blood on ventricular wall during atrial contraction

60. Brunners gland is present in

(A) Duodenum

(B) Jejunum

(C) Ileum

(D) Rectum


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(C) III V l II IV VI

(D) III V I IV II IV

62. Match the items in column I with those in column II and choose the correctanswer.

Column-I Column-II

P. Blue green algae as biofertilizer i. Ectomycorrhiza

Q. Fungi as biofertilizer ii. ThiobaciUus sp.

R. Free living nitrogen fixing bacteria iii. Anabena sp.

S. Phosphate solubilizing bacteria iv. Clostridium sp.

v. Azospirillum sp.

(A) P-iii, Q-i, R-v, S-ii

(B) P-v, Q-i, R-ii, S-iv

(C) P-v, Q-iv, R-i, S-i

(D) P-iv, Q-ii, R-iv, S-ii

63. A man having the genotype EEFfGgHH can produce P number of genetically different sperms, and a woman of genotype IiLLMmNn can generate


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Q number of genetically different eggs. Determine the values of P and Q.

(A) P = 4, Q = 4

(B) P = 4, Q = 8

(C) P = 8, Q = 4

(D) P = 8, Q = 8

64. In an organism, tall phenotype is dominant over recessive dwarf phenotype, and the alleles are designated as T and t, respectively. Uponcrossing two different individuals, total 250 offsprings were obtained, out of which 124 displayed tall phenotype and rest were dwarf. Thus, the genotype of the parents were

(A) TT x TT

(B) TT x tt

(C) Tt x Tt

(D) Tt x tt


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65. Identify the incorrect statements from the following.

P. Cymose inflorescence found in Hibiscus sp.

Q. Hypenthedium is found in Ficus benghalensis

R. Synandrous stamen is found in Calotropis

S. Hesperidium type of fruit is Mango

(A) R, S

(B) P, Q

(C) Q, R

(D) P, S

66. How many ATP molecules will be generated in a plant system duringcomplete oxidation of 40 moles of glucose ?

(A) 190


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(B) 380

(C) 1520

(D) 3040

67. A - DNA is

(A) Left-handed helix with 12 nucleotide pairs per turn

(B) Right-handed helix with 11 nucleotide pairs per turn

(C) Right-handed helix with 12 nucleotide pairs per turn

(D) Left-handed helix with 11 nucleotide pairs per turn

68. Bursa fabricius is an important organ of birds. This organ is associatedwith

(A) Generation of basophil

(B) Production of uric acid


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(C) Metabolism of fatty acids

(D) Generation of B-cell

69. Which one of the following is a population ?

(A) A spider and some trapped flies in its web

(B) Earthworm that lives in a grassland along with other arthropods

(C) All the plants in a forest

(D) All the oak trees in a forest

70. In most simple type of canal system of porifera, water flows through whichone of the following ways ?

(A) Ostia Spongocoel Osculum Exterior

(B) Spongocoel Ostia Osculum Exterior

(C) Osculum Spongocoel > Ostia Exterior


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(D) Osculum Ostia Spongocoel Exterior

71. What would be the percentage of thymine in a double stranded DNAsample which contains 20% cytosine of the total bases ?

(A) 10%

(B) 20%

(C) 30%

(D) 40%

72. Which one of the following is a correct match ?

(A) Filariasis - Taenia solium

(B) Encephalitis - Culex vishnui

(C) Malaria - Phlebotomus sp.

(D) Kala-azarAnopheles stephensi


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73. One micrometer is equal to

(A) 0.0001 mm

(B) 0.001 mm

(C) 0.01 mm

(D) 0.00001 mm

74. Identify the origin of sympathetic nerve fibres and the location of theirganglia.

(A) They arise from thoraco-lumber region of spinal cord and form ganglia justbeside the vertebral column

(B) They arise from thoracocervical region of spinal cord and form ganglia justbeside the vertebral column

(C) They arise from cranio-sacral region of spinal cord and form ganglia veryclose to effector organ

(D) They arise from thoraco-lumber region of spinal cord and form gangliavery close to effector organ


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75. Among the following characteristics, indicate the correct combinationapplicable to conditional reflex.

P : Acquired by practice or learning

Q : Non acquired by birth

R : Does not abolish by lack of practice

S : Participation of cerebral cortex

T : Originates spontaneously

(A) P, Q, R

(B) P, Q, S

(C) P, R, T

(D) Q, R,T

76. During synaptic transmission of nerve impulse, neurotransmitter (P) is


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released from synaptic vesicles by the action of ions (Q). Choose the correct Pand Q.

(A) P = Acetylcholine, Q = Ca++

(B) P = Acetylcholine, Q = Na+

(C) P = GABA, Q = Na+

(D) P = Cholinesterase, Q = Ca++

77. Choose the right sequential phenomena among the following during thedelivery of O2 from blood to tissue.

P : Absorption of CO2 by the blood

Q : Reaction of absorbed CO2 with H2O to form H2CO3 within RBC and itsconversion into H+ and HCO3- ions

R : Reaction of absorbed CO2 with H2O in plasma to form H2CO3 and itsconversion into H+ and HCO3- ions

S : Combination of H+ with heme portion of HbO2 to release O2

T : Combination of HCO3- with heme portion of HbO2 to form reducedhemoglobin and release of O2


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(A) P, Q, T

(B) P, R, S

(C) P, Q, S

(D) P, R, T

78. Oral contraceptive pill is composed of

(A) Estrogen and Progesterone

(B) Estrogen and Testosterone

(C) Progesterone and Testosterone

(D) Estrogen and Growth hormone

79. Match the items in column I with those in column II and choose the correctanswer.

Column 1 Column II

P. Electroencephalography i. A graphic recording of the electrical activity


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of heart

Q. Electrocardiography ii. A graphic recording of the electrical activity of brain

R. Endoscopy

iii. A technique that gives image automatically in multiple planes

S. MRI

iv. To view within the body without cutting through the overlayingtissues

(A) P-ii, Q-i, R-iv, S-iii

(B) P-iv, Q-ii, R-iii, S-iv

(C) P-i, Q-iii, R-ii, S-iv

(D) P-iii, Q-iv, R-i, S-ii

80. What are ketone bodies ?

(A) Acetoacetic acid, Acetone and Beta-hydroxybutyric acid


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(B) Nicotinic acid, Folic acid and Ascorbic acid

(C) Acetone, Beta-hydroxybutyryl CoA, and Acetoacetic acid

(D) Acetic acid, Acetone and Beta-hydroxybutyric acid

***

WBJEE-Biological Science-2008(Eng) up Terms and categories:

W.B Joint Entrance Exam

Biological Science

Question-paper

WBJEE-2012

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WBJEE: Biological Sciences Study Reference

Syllabus

Unit of Life

Ultrastructure and functions of cellular components

Microscopy and Electron Microscope


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Physical and Chemical principles involved in maintenance of life processes

Biomolecules: Carbohydrates, Proteins, Nucleic acids

Enzymes

Chromosomes and Cell Division

Genetics

Mutation

Origin, Evolution and Diversity of Life

Taxonomy and Classification

Concept of Biodiversity

Population BiologyEcosystem

Environmental Pollution

Virus and Bacteria

Biotechnological application of microbes

Tissue and tissue system

Functions of life: Photosynthesis, Respiratory System, Cardiovascular System& Blood

Nutrition and Digestive System

Metabolism

Excretory System

Nervous and Muscular system

Endocrine System and animal hormones

Growth, Reproduction, and Ageing

Immunology

Medical, Agricultural and Economic Zoology

Application of Biology

Biomedical Engineering


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WBJEE-Biological Science-2012(Eng)

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