Question
| Column A | Column B |
| (1) Organism | (a) Large unit with specific climatic zone |
| (2) Population | (b) Different species in particular area |
| (3) Community | (c) Same species in a geographical area |
| (4) Biome | (d) Basic unit of ecological hierarchy |
| Column A | Column B |
| (1) Organism | (a) Large unit with specific climatic zone |
| (2) Population | (b) Different species in particular area |
| (3) Community | (c) Same species in a geographical area |
| (4) Biome | (d) Basic unit of ecological hierarchy |
| Column A | Column B |
| (1) Organism | (d) Basic unit of ecological hierarchy |
| (2) Population | (c) Same species in a geographical area |
| (3) Community | (b) Different species in particular area |
| (4) Biome | (a) Large unit with specific climatic zone |
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|
|
Hormone
|
Source
|
Function
|
|
(A)
|
Oxytocin
|
W
|
Ejection of milk
|
|
(B)
|
X
|
Anterior lobe of pituitary gland
|
Stimulates secretion of ABP from Sertoli cells
|
|
(C)
|
Y
|
Placenta
|
Maintains corpus luteum to secrete progesterone
|
|
(D)
|
Relaxin
|
Ovary
|
Z
|

| Column I [Contraceptive method] | Column II [Mode of action] |
| (1) Pill | (a) Prevents sperms reaching cervix |
| (2) Condom | (b) Prevents implantation |
| (3) Vasectomy | (c) Prevents ovulation |
| (4) Copper T | (d) Semen contains no sperms |
|
S.no
|
Polynudeotide chains
|
Polynudeotide chains
|
|
(a)
|
Parallel
|
5
|
|
(b)
|
Anti-parallel
|
10
|
|
(c)
|
Parallel
|
15
|
|
(d)
|
Anti-parallel
|
20
|