1. AFMC–PAST PAPERS
BIOLOGY- UNSOLVED PAPER - 2001

2. SECTION – I (Total Marks : 50)
 Single Correct Answer Type
 There are five parts in this question. Four choices are given for each part and one of them is
correct. Indicate you choice of the correct answer for each part in your answer-book by
writing the letter (a), (b), (c) or (d) whichever is appropriate

3. 01 Problem
A pleiotropic gene is one which
a. Supplements effect of another gene
b. Affects more than one character
c. Affects one character
d. Requires another gene for expression

4. 02 Problem
Gibberellin was discovered from
a. Bryophyte
b. Fungus
c. Algae
d. Gymnosperm

5. 03 Problem
Functional xylem of dicot tree is
a. Heart wood
b. Autumn wood
c. Sap wood
d. Hard wood

6. 04 Problem
Transduction in bacteria is mediated by
a. Plasmid vectors
b. Phage vectors
c. Cosmids
d. F-factors

7. 05 Problem
Reabsorption of water in distal parts of kidney tubules/urine concentration is
controlled by
a. Calcitonin
b. Oxytocin
c. Vasopressin
d. Relaxin

8. 06 Problem
Spreading kerosene oil on water kills mosquito because
a. Mosquito cannot respire as kerosene forms a film on water surface
b. It makes them to sink downwards
c. Kerosene oil is toxic for them
d. None of these

9. 07 Problem
Which of the following is structural and functional unit of nervous system ?
a. Neurons
b. Neuroglia
c. Axon
d. Osteocyte

10. 08 Problem
2, 4-D is
a. Rodenticide
b. Insecticide
c. Weedicide
d. Nematicide

11. 09 Problem
Pollen of animophilous plants are
a. Small, dry and unwettabie
b. Small and sticky
c. Large and heavy
d. Large, light and hygroscopic

12. 10 Problem
Ginger multiplies vegetatively by
a. Tuber
b. Stem
c. Bud
d. Rhizome

13. 11 Problem
The correct sequence of taxonomic categories is
a. Division-class-family-tribe-order-genus – species
b. Phylum-order-class-tribe-family-order - genus-species
c. Class-phylum-tribe-order-family-genusspecies
d. Division-class-order-family-tribe-genusspecies

14. 12 Problem
Crossed pollination is preferred over self-pollination because
a. It is easy
b. It results in a better offspring
c. The new varieties are formed
d. Parthenogenesis can be induced

15. 13 Problem
The production of seedless fruits is called
a. Parthenocarpy
b. Ovulation
c. Pollination
d. Eugenics

16. 14 Problem
To find Ecolab cultures, you should look for
a. Rabbit's saliva
b. Human intestine
c. Human placenta
d. Human hair

17. 15 Problem
Which of the following diseases is nearly eradicated from India ?
a. Small pox
b. Poliomyelitis
c. Plague
d. Rabies

18. 16 Problem
Which of the following is a bacterial disease?
a. Ascariasis
b. Leprosy
c. AIDS
d. Polio

19. 17 Problem
Which of the following is not a part of Darwin's theory of evolution ?
a. Struggle for existence
b. Survival of the fittest
c. Genetic drift
d. Natural selection

20. 18 Problem
Nucleolus was discovered by
a. Altmann
b. Fontana
c. Schleiden
d. Robert brown

21. 19 Problem
Which of the following is known as "Power House" of the cells ?
a. Ribosomes
b. Mitochondria
c. Nucleus
d. Cytoplasm

22. 20 Problem
The basic structural unit of Kidney is
a. Nephron
b. Cortex
c. Adrenal
d. Medulla

23. 21 Problem
Egg apparatus consists of
a. Egg and two synergids
b. Egg and central cell
c. Egg and antipodal cells
d. Egg and one synergid

24. 22 Problem
Increase in fertility of soil without adding any nutrition is due to
a. Favorable temperature
b. Crop residue
c. Floods
d. Microbial activity

25. 23 Problem
In bacteria, the site for respiration is
a. Episome
b. Mesosome
c. Cytoplasm
d. Plasmid

26. 24 Problem
Which is common among Scorpion, Crab, Honeybee and Silverfish ?
a. Poison glands
b. Jointed legs
c. Compound eyes
d. Metamorphosis

27. 25 Problem
In amphibian, the heart has
a. One auricle and two ventricles
b. Two auricles and one ventricle
c. Two auricles and two ventricles
d. One auricle, one ventricle and one sinus venous

28. 26 Problem
The presence of large amount of nitrogen in the atmosphere is due to
a. Nitrogen cycle
b. Nitrites
c. Decomposers
d. Ammonia

29. 27 Problem
An association between two different organisms in which one is always
benefitted while the other remains unharmed is
a. Mutualism
b. Commensalism
c. Symbiosis
d. Succession

30. 28 Problem
Bladderworm stage of Taenia solium is
a. Rostella
b. Strobila
c. Onchosphere
d. Cysticercus

31. 29 Problem
Which of the following is an emergency hormone?
a. Progestrone
b. Prolactin
c. Thyroxin
d. Adrenalin

32. 30 Problem
Ozone hole means
a. Same concentration of ozone
b. Decrease in the concentration of ozone
c. Increase in the concentration of ozone
d. Hole in the stratosphere

33. 31 Problem
Now-a-days cornea transplantation has been done on large scale because
a. It does not link up with blood vessels
b. It has a transparent portion
c. It is easily available
d. None of these

34. 32 Problem
How many bones are present in human skull ?
a. 42
b. 22
c. 32
d. 12

35. 33 Problem
Formation of blood is called
a. Plasmolysis
b. Hemopoiesis
c. Plasmalysis
d. Anaemia

36. 34 Problem
Deviation from the normal size and shape of RBC is known as
a. Poikilocytosis
b. Anisocytosis
c. Exocytosis
d. None of these

37. 35 Problem
Testes are protected in scrotum because
a. They produce heat
b. They produce sperm
c. They help in micturation
d. They control the ambient temperature lower than general body

38. 36 Problem
Bacteria is included in which of the following Kingdom ?
a. Monera
b. Plantae
c. Protista
d. Animalia

39. 37 Problem
The bite of Cobra attacks which of the following systems of man ?
a. Respiratory
b. Circulatory
c. Digestive
d. Nervous

40. 38 Problem
Bee's dance is meant for
a. Happiness
b. Communication
c. Reproduction
d. There is no such dance

41. 39 Problem
Which of the following is an essential liquid ?
a. Steroids
b. Phospholipid
c. Oils
d. Fats

42. 40 Problem
Wilting in plants occurs due to increase in
a. Transpiration
b. Photoperiodism
c. Photosynthesis
d. Osmosis

43. 41 Problem
Which are purines ?
a. Cystine and thymine
b. Adenine and thymine
c. Adenine and guanine
d. Cytosine and guanine

44. 42 Problem
Sweating is meant for
a. Removal of excess salt
b. Regulation of body temperature
c. Killing of skin bacterid
d. Removal of excess water

45. 43 Problem
Electron microscope has more advantages than light microscope because it
a. Gives depth focus
b. Has higher magnification
c. Requires no light
d. Uses vacuum

46. 44 Problem
Branch of biology dealing with mechanism of heredity is
a. Euthenics
b. Eugenics
c. Genetics
d. Cytology

47. 45 Problem
Which of the following is not a function of vitamin ?
a. Formation of organs
b. Cell maturation
c. Maintenance of organs
d. Growth

48. 46 Problem
Wildlife is destroyed most when
a. Natural habitat is destroyed
b. Mass scale hunting for foreign trade
c. There is lack of proper care
d. Natural calamity

49. 47 Problem
Fungi differ from algae in being
a. Parasitic
b. Autotrophic
c. Heterotrophic
d. Epiphytic

50. 48 Problem
Spirogyra filaments increase in length due to deficit drawn of
a. Evergreen cells
b. Rhizoidal cell
c. Basal cells
d. Apical cells

51. 49 Problem
Grafting is not possible in monocots as they
a. Are herbaceous
b. Have parallel venation
c. Lack auxin
d. Have scattered vascular bundle

52. 50 Problem
Sexual reproduction in plants was discovered by
a. Camerarins
b. Strasburger
c. Nawaschin
d. Hofmiester

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