AIPMT Biology Questions and Answers 2014 (21-30)

21. Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of : 
a) Analogous organs
b) Adaptive radiation
c) Homologous organs
d) Convergent evolution

22. Which one of the following are analogous structures
a) Wings of bat and wings of pigeon
b) Gills of prawn and lungs of man
c) Thorns of Bougainvillea and tendrils of Cucurbita
d) Flippers of dolphin and legs of horse

23. Which is the particular type of drug that is obtained from the plant whose one flowering branch is shown below?
Datura plant
a) Hallucinogen
b) Depressant
c) Stimulant
d) Pain-killer

24. What gases are produced in anaerobic sludge digesters? 
a) Methane and CO2 only
b) Methane, hydrogen sulphide and CO2
c) Methane, hdyrogen sulphide and O2
d) Hydrogen sulphide and CO2

25. To obtain virus-free healthy plants from a diseased one by tissue culture technique, which part/parts of the diseased plant will be taken? 
a) Apical meristem only
b) Palisade parenchyma
c) Both apical and axillary meristems
d) Epidermis only

26. Commonly used vectors for human genome sequencing are 
a) T-DNA
b) BAC and YAC
c) Expression Vectors
d) T/A Cloning Vectors

27. During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C? 
a) G0 and G1
b) G1 and S
c) Only G2
d) G2 and M

28. Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly cut coleoptile stumps. Of what significance is this experiment? 
a) It made possible the isolation and exact identification of auxin
b) It is the basis for quantitative determination of small amounts of growth-promoting substances
c) It supports the hypothesis that IAA is auxin
d) It demonstrated polar movement of auxins

29. Deficiency symptoms of nitrogen and potassium are visible first in 
a) Senescent leaves
b) Young leaves
c) Roots
d) Buds

30. Match the following and select the correct answer
Column I             Column II 

a. Centriole         (i) Infoldings in mitochondria
b. Chlorophyll     (ii) Thylakoids
c. Cristae            (iii) Nucleic acids
d. Ribozymes      (iv) Basal body cilia or flagella
      (a) (b) (c) (d)
(A) (iv) (ii) (i) (iii)
(B) (i) (ii) (iv) (iii)
(C) (i) (iii) (ii) (iv)
(D) (iv) (iii) (i) (ii)

Learn more: AIPMT Biology (2014)
Questions & Answers: 1-11 / 11-20 31-40 / 41-50 51-60 / 61-70 / 71-80 81-90
21. c) Homologous organs
22. b) Gills of prawn and lungs of man
23. a) Hallucinogen
24. b) Methane, hydrogen sulphide and CO2
25.c) Both apical and axillary meristems
26.b) BAC and YAC
27. c) Only G2
28. a) It made possible the isolation and exact identification of auxin
29. a) Senescent leaves
30. (A)
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