| Column-I | Column-II | ||
| A. | Sertoli cells | P. | Secretion of androgens |
| B. | Leydig cells | Q. | Spermiogenesis |
| C. | Uterine Myometrium | R. | Implantation |
| D. | Uterine Endometrium | S. | Parturition |
| A | B | C | D | |
| 1. | P | R | Q | S |
| 2. | R | S | P | Q |
| 3. | Q | P | S | R |
| 4. | S | Q | R | P |
| 1. | By the end of the second month |
| 2. | During the third month |
| 3. | By the end of the fourth month |
| 4. | During the fifth month |
| 1. | Foetal hypothalamus |
| 2. | Maternal pituitary |
| 3. | Fully developed foetus and placenta |
| 4. | Maternal hypothalamus |
| 1. | Oestrogen | 2. | Progesterone |
| 3. | Thyroxine | 4. | Human placental lactogen |
| Statement I: | The release of sperms into the seminiferous tubules is called spermiation. |
| Statement II: | Spermiogenesis is the process of formation of sperms from spermatogonia. |
| (a) | It results in the formation of haploid gametes. |
| (b) | Differentiation of gamete occurs after the completion of meiosis. |
| (c) | Meiosis occurs continuously in a mitotically dividing stem cell population. |
| (d) | It is controlled by the Luteinising hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary. |
| (e) | It is initiated at puberty. |
| 1. (b), (c), and (e) only | 2. (c) and (e) only |
| 3. (b) and (c) only | 4. (b), (d) and (e) only |
How many Y-chromosomes are present in the 2nd polar body in human beings?
1. 01
2. 00
3. 23
4. 02