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 |
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
Which of the following hormones are secreted in women only during pregnancy?
(a) | Relaxin | (b) | Oxytocin |
(c) | hCG | (d) | hPL |
(e) | Progesterone |
Choose the most appropriate answer from the options given below:
1. (c), (d) and (e) only