| A | B | C | D | |
| 1. | 46 | 46 | 23 | Second |
| 2. | 46 | 23 | 23 | Secondary |
| 3. | 46 | 23 | 23 | Second |
| 4. | 23 | 23 | 46 | Secondary |
| COLUMN I | COLUMN II | ||
| A | Insemination | P | embryonic development |
| B | Implantation | Q | transfer of sperms into the female genital tract |
| C | Gestation | R | delivery of the baby |
| D | Parturition | S | attachment of blastocyst to the uterine wall |
| A | B | C | D | |
| 1. | Q | S | R | P |
| 2. | S | Q | R | P |
| 3. | Q | S | P | R |
| 4. | S | Q | P | R |
| I: | sperm formation continues even in old men, but formation of ovum ceases in women around the age of fifty years. |
| II: | sperm formation begins in foetal life and egg formation begins after the onset of puberty. |
| 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 |
