A | B | C | D | |
1. | FSH | LH | Progesterone | Oestrogen |
2. | FSH | LH | Oestrogen | Progesterone |
3. | LH | FSH | Progesterone | Oestrogen |
4. | LH | FSH | Oestrogen | Progesterone |
I: | The reproductive cycle in the non-primate female mammals is called menstrual cycle. |
II: | The first menstruation begins at puberty and is called menarche. |
III: | In human females, menstruation is repeated at an average interval of about 28/29 days, and the cycle of events starting from one menstruation till the next one is called the menstrual cycle. |
1. | Progesterone | 2. | Oestrogen |
3. | LH | 4. | FSH |
Assertion (A): | Not all copulations lead to fertilisation and pregnancy. |
Reason (R): | Fertilisation can only occur if the ovum and sperms are transported simultaneously to the ampullary region of the oviduct. |
1. | Both (A) and (R) are True and (R) explains (A). |
2. | Both (A) and (R) are True but (R) does not explain (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |
1. | LH | 2. | FSH |
3. | Oestrogen | 4. | Progesterone |
1. | 30000-40000 | 2. | 60,000-80,000 |
3. | 120000-160000 | 4. | 240000-320000 |
1. | ampulla | 2. | antrum |
3. | blastocoel | 4. | enterocoel |
Assertion (A): | The secondary oocyte retains bulk of the nutrient rich cytoplasm of the primary oocyte. |
Reason (R): | The division of primary oocyte is an unequal division resulting in the formation of a large haploid secondary oocyte and a tiny first polar body. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | (A) is False but (R) is True. |