NEET TEST SERIES 145 BIOLOGY

11. When does the Oxygen dissociation curve shift to the right?

(a) Decrease in acidity
(b) Increase in carbon dioxide concentration
(c) Decrease in temperature
(d) Decrease in pH

Deselect Answer

a)

b)

c)

d)

12. How many sperms are formed from a secondary spermatocyte?

(a) 4
(b) ৪
(c) 2
(d) 1

Deselect Answer

a)

b)

c)

d)

13. In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by:

(a) p²
(b) 2pq
(c) pq
(d) q²

Deselect Answer

a)

b)

c)

d)

14. Which one of the following hormones maintains the Pregnancy in second trimester?

a) LH (luteinizing hormone)
b) progesterone
c) estrogen
d) hCG (human Chorionic Gonadotropin)

Deselect Answer

a)

b)

c)

d)

15. Volume of air that will remain in the lungs after a normal expiration is:

(a) FRC
(b) VC
(c) ERV
(d) IRV

Deselect Answer

a)

b)

c)

d)

16. The diagram given here is the standard ECG of a normal person. The P-wave represents the:

(a) Contraction of both atria
(b) Initiation of the ventricular contraction
(c) Beginning of the systole
(d) End of the systole

Deselect Answer

a)

b)

c)

d)

17. Following are the two statements regarding the origin c life:
(i) The earliest organisms that appeared on the eart were non-green and presumably anaerobes.
(ii) The first autotrophic organisms were the chemoautor trophs that never released oxygen.

(a) (ii) is correct but (i) is false
(b) Both (i) and (ii) are correct
(c) Both (i) and (ii) are false
(d) (i) is correct but (ii) is false

Deselect Answer

a)

b)

c)

d)

18. MALT is considered as the secondary lymphoid organ which is located within the lining of major tracts in th body. Here, MALT stands for:

(a) Metaderm Associated Lymphoid Tissues
(b) Medulla Associated Lymphoid Tissues
(c) Mucosal Associated Lymphoid Tissues
(d) Mucosal Associated Leukemia Tissues

Deselect Answer

a)

b)

c)

d)

19. Identify the wrong statement regarding evolution.

a) Darwin’s variations are small and directional.
b) Mutations are random and non-directional.
c) Adaptive radiations leads to divergent evolution.
d) Mutations are non-random and directional.

Deselect Answer

a)

b)

c)

d)

20. Choose the correct option for P, Q, R and S

(a) ‘P’-A, AB; ‘Q’-B, AB; ‘R’-AB, A, B, O; ‘S’-O
(b) ‘P’-A; ‘Q’-O, A, B, AB; ‘R’-AB, A, B, O; ‘S’-A, B
(c) ‘P’-O; ‘Q’-B, AB; ‘R’-A; ‘S’-AB, A, B, O
(d) ‘P’-O; ‘Q’-O, A, B, AB; ‘R’-B; ‘S’-AB

Deselect Answer

a)

b)

c)

d)

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