Tribhuvan University
Institute of Science and Technology
B.Sc. Entrance Examination (Biological Group)
Full marks: 100
Time: 2 hrs
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Answer all questions
Group A (Zoology)
1. The father of zoology is
a) Robert Hooke
b) Aristotle
c) Linnaeus
d) Theophrastus
2. The study of insects is called
a) Entomology
b) Parasitology
c) Mycology
d) Taxonomy
3. Which group has a radially symmetrical body
a) Protozoa
b) Echinodermata
c) Annelida
d) Mollusca
4. Haemocoelom is present in
a) Arthropoda
b) Annelida
c) Fish
d) Amphibia
5. Water Vascular system is present in
a) Porifera
b) Coelenterata
c) Echinodermata
d) Arthropoda
6. Operculum is used to cover
a) Eye
b) Gill
c) Mouth
d) Ear
7. Which one of the following is an insect
a) Spider
b) Scorpion
c) Prawn
d) Grasshopper
8. Which one is a true fish
a) Cuttlefish
b) Starfish
c) Dogfish
d) Silverfish
9. Which nucleus has a role in conjugation in Paramecium
a) Mega nucleus
b) Micronucleus
c) Macronucleus
d) Cellular nucleus
10. Which Segment has setae present in earthworm
a) 1°
b) Last
c) Clitellar
d) 10°
11. Male genital aperture is situated in
a) 14 segment
b) 10 segment
c) 18 segment
d) 17 segment
12. The function of spermatheca in earthworms is to
a) Store sperms
b) Store ova
c) Store enzyme
d) Store zygote
13. The causative agent of Tuberculosis is
a) Leishmania
b) Salmonella
c) Mycobacterium
d) Taenia
14. Which of the following is a non-communicable disease
a) TB
b) Kalazar
c) AIDS
d) Cancer
15. Air-borne disease is
a) Typhoid
b) TB
c) Filaria
d) Cancer
16. Which season, frogs usually go for aestivation
a) Summer
b) Winter
c) Rainy
d) Autumn
17. The artery which supplies the blood to the liver is
a) Renal
b) Hepatic
c) Coronary
d) Gastric
18. The testis of the frog is attached to the peritoneum. This Structure is called
a) Mesovarian
b) Retroperitoned
c) Nephron
d) Mesorchium
19. Which one of the following is a vestigial organ
a) Forelimb
b) Hind Limb
c) Appendix
d) Liver
20. Miller and Urey expt. is designed for verification
a) Darwin theory
b) Oparin's theory
c) Lamarche theory
d) Redi theory
21. Theory of “Inheritance of Acquired characters" was proposed by
a) Darwin
b) Lamark
c) Hugo de-Vries
d) Huxley
22. Striped muscle is different from unstriped on the basis of
a) Nuclei
b) Myofibrils
c) Shape
d) Dark and light bands
23. Nephrons are found in
a) kidney
b) Liver
c) Testis
d) Ovary
24. Which stage of the embryo, blastocoels present
a) Neurula
b) Gastrula
c) Blastula
d) Morula
25. Which one is the hormone released from Adrenal gland
a) Glucagon
b) Insulin
c) Mineralocorticoides
d) GSH
26. The enzyme trypsin is released from
a) Stomach
b) Intestine
c) Liver
d) Pancreas
27. Which of the following is not a covering of the brain in human
a) Duramater
b) Epithelium
c) Piamater
d) Arachnoid
28. The cavity found pelvic girdle of mammal is
a) Acetabulum
b) Glenoid cavity
c) Obturator foramen
d) Sigmoid notch
29. Fishes migrating within the ocean is
a) Potamodromous
b) Amphidromous
c) Catadromous
d) Ocenodromous
30. Wall lizard moves on the wall due to
a) Vacuum creation
b) Tail
c) Leg
d) Nail
31. In vitro fertilization is used for
a) Detection of disorder of fetus
b) Giving birth to the baby
c) Women unable to give birth
d) Detection of cancer
32. Which of the following is a wildlife reserve
a) Koshi Tappu
b) Makalu-Barun
c) Shivapuri
d) Khaptad
33. Which is an example of reflex action?
a) Vision
b) Eye-blinking
c) Movement
d) Reading
Group B (Chemistry)
34. One mole of CO; contains
a) 6.02x 10° atoms of C
b) 6.02x 10° atoms of O CO,
c) 18.1x 10°? molecule of
d) 3g atoms of CO,
35. Real gases will approach the behavior of ideal gas at:
a) low T, low P
b) low T, high P
c) high T, high P
d) high T, low P
36. The electronic configuration of silver atom in the ground state is:
a) [Ar] 3d""4s' c) [Kr] 4d'°5s'
b) [Xe] 4f'*5d"6s' d) [Kr] 4d°5s°
37. Which of the following has the lowest melting point?
a) LiCl
b) NaCl
c) KCl
d) RbCl
38. Which of the following bond is non-polar?
a) N-H
b)C-H
c) F-F
d)O-H
39. The direction of a chemical reaction is the direction of decrease of :
a) Gibb's free energy
b) Entropy
c) Enthalpy
d) None
40. The PH of the gastric juice is
a) slightly acidic
b) highly acidic
c) slightly basic
d) neutral
41. An oxidizing agent is capable of:
a) giving electrons
b) accepting electrons
c) producing anion
d) producing cation
42. The role of a catalyst in a chemical reaction is to change:
a) enthalpy of reaction
b) nature of products
c) activation energy
d) equilibrium constant
43. Ozone decolorises vegetable matter due to its:
a) oxidizing action c) hydrolytic action
b) reducing action d) unsaturated nature
44. The strongest acid amongst the following 1s:
a) HF c) HBr
b) HCl d) HI
45. The noble gas element which is used as cryogenic fluid is:
a) He c) Ar
b) Ne d) Kr
46. Which of the following is the weakest base?
a) Mg(OH), c) NaOH
b) Ca(OH), d) KOH
47. German silver is an alloy of:
a) Copper c) Zinc
b) Lead d) Silver
48. The number of isomers of C,H, is
e) 4 g) 6
f) 5 h) 7
49. Marsh gas mainly contains:
a) CoH, c) H,S
b) CH, d) CO
50. Baeyer's reagent is
a) alkaline permanganate c) neutral permanganate
solution solution
b) acidified permanganate d) aqueous bromine solution
solution
51. In the nitration of benzene with a mixture of conc. HNO3 and conc.H2SO4, the active species involved 1s:
a) nitrite ion C) nitronium ion
b) nitrate ion d) nitrogen peroxide
52. In Lassaigne's test, when both N & S are present, a blood-red color
is obtained. This is due to the formation of :
a) ferric ferrocyanide c) ferric thiocyanate
b) ferric cyanide d) ferric hydroxide
53. Which of the following is not a glyceride? :
a) Fat c) Phospholipid
b) Oil d) Soaps
54. Substances which bring the body temperature down are known as:
a) antipyretics Cc) antibiotics
b) analgesics d) none
55. oo U emits an @ particle, the mass number and atomic number of
the product formed are,
a) 236, 92 c) 238, 90
b) 234, 90 d) 236, 90
56. Green vitriol is:
a) CuSQO,. 5H,O ) NiSQO,. 6H,O
b) FeSO,. 7H,O d) ZnSO,. 7H,O
57. Which of the following is a dihydric alcohol ?
a) Glycol c) Glycine
b) Glycerol d) Citric acid
58. Phenol is more acidic than
a) acetic acid C) p-nitrophenol
b) ethyl alcohol d) p-methoxyphenol
59. Salicylic acid is an aromatic compound containing:
a) one-OH group c) one-COOH group and one-
b) one-COOH group OH group
d) two COOH group
60. Methylamine is:
a) slightly acidic c) more basic than NH;
b) less basic than NH; d) neutral
61. Carbylamines reaction is used to test:
a) 1° amine c) 3° amines
b) 2° amines d) none
62. Which of the following types of compounds forms zwitterion :
a) amino acids c) nucleic acids
b) carbohydrate d) lipids
63. Variable valency is exhibited by:
a) transition metals c) alkali metals
b) non-metals d) alkaline earth metals
64. The main contributor of the greenhouse effect is:
a) NO, c) CO,
b) SO, d) OF,
65. Which of the following pairs of ions cannot be separated by H2S in
dil HCl ?
a) Bi*, Sn* c) Fe", Hg*
b) Cu**, Co** d) Zn**, Ni**
66. If 250 ml of 0.25 M NaCl solution 1s diluted with water to a volume
of 500ml, the new concentration of the solution 1s:
a) 0.167 M c) 0.0833 M
b) 0.125 M d) 0.0167 M
67. The primary cells are:
a) rechargeable c) not rechargeable
b) ever lasting d) none
Group C (Botany)
68 Plant cells usually differ from animal cells in the absence of
a) Mitochondria c) Centrioles
b) ER d) Ribosomes
69. Viruses are essentially made of
a) Proteins and nucleic acids c) Lipids and nucleic acids
b) Proteins and d) Starch, proteins and
carbohydrates lipids
70. Difference between Gram +ve and Gram -ve bacteria is in their
a) Cell membrance c) Ribosome
b) Cell wall d) Mitochondria
71. Sexual reproduction in Chlorophyceae occurs by
a) Isogamy c) Oogamy
b) Anisogamy d) All above
72. Fungi can be stained by
a) Cotton blue c) Lactophenol
b) Safranine d) Glycerine
73. The most common group of Algae in lichen is
a) Green algae c) Red algae
b) Blue-green algae d) Brown algae
74. In Marchantia, female sex organs are produced in stalked
structures called
a) Gynophore c) Carpel
b) Megasporophyll d) Archegoniophore
75. Prothallus of fern produces
a) Gametes c) Gametes and spores
b) Spores d) None of above
76. Female cone of Pinus is
a) Flower c) Megasporophyll
b) Inflorescence d) Microsporophyll
77. Ginger is a stem and not a root because
a) It stores food c) It has nodes and
b) Itis bitter in taste internodes
d) It is non-green in colour
78. Collenchyma differs from parenchyma in having
a) Living protoplasm c) Cellulose walls
b) Vacuoles d) Pectin deposits at corners
79. Mycorrhizal root is
a) Akind of root with fungal c) Association of fungus
diease with the root of higher
b) A kind of fungal root plants
d) Akind of undeveloped
root
80. A bulb is modification of
a) Root c) Leaf
b) Stem d) Fruit
81. What is edible in guava ?
a) Pericarp c) Cotyledons
b) Thalamus d) Perianth
82. Compound leaf
a) Never bears an axillary c) Always arise in the axil of
bud other leaf
b) Never bears terminal bud d) Has an entire lamina
83. Which of the following name is correctly written ?
a) Ficus Bengalensis c) Rosa indica
b) Apis indica d) Mangifera indica
84. Hypogynonus flower refers to having
a) Ovary superior c) Ovary half inferior half
b) Ovary inferior superior
d) Ovary absent
85. ATP formation during photosynthesis is
a) Phosphorylation c) Oxidative
b) Photophosphorylation phosphorylation
d) None of these
86. The number of ATP molecules synthesized in glycolysis of aerobic
respiration is
a) 2 c) 30
b) 8 d) 6
87. The maximum water loss during transpiration is from
a) Lenticels c) Stomata
b) Cuticle d) Hydathodes
88. Dry seeds when placed in water swell up due to
a) Imbibitions c) Diffusion
b) Absorption d) Adsorption
89. Movement in the leaf of Mimosa pudica occurs due to turgor
changes in
a) Pulvinus and pulvinules c) Leaf and leaflets
b) Pinna and pinnules d) Petiole and rachis
90. Which of the following induces cell division?
a) Cytokinins c) Gibberellins
b) Auxins d) Abscisic acid
91. The oxygen in photosynthesis is released from
a) CO, c) Both CO, and H,O0
b) H,O d) Chlorophyll
92. Pyruvic acid is formed at the end of
a) Calvin cycle c) Glycolysis
b) Krebs cycle d) Pentose phosphate pathway
93. Transfer of information from DNA to mRNA is called
a) Transcription c) Translation
b) Transduction d) Amination
94. Genetic code is
a) Singlet c) Triplet
b) Doublet d) None of above
95. TMV contains genetic material
a) Chromosomes c) RNA
b) DNA d) All of above
96. The factors that represent the contrasting pairs of characters are called
a) Dominant and recessive c) Homologous pairs
b) Alleles d) Determinants
97. When frog eats grasshopper which thrives on green plants, the frog is
a) Primary producer c) Primary carnivore
b) Herbivore d) Top consumer
98. 5" June is celebrated as
a) World Population Day c) Word Environment Day
b) World AIDS Day d) World Hygiene Day
99. Vegetative production of new plants
a) Quick production of new plants
b) Combining good qualities of two varieties
c) Both a) and b)
d) None
100. Anemophily is pollination carried out by
a) Animal c) Water
b) Wind d) Insect
The End
