Q. No.Extrusion of the second polar body from the egg nucleus occurs:
1. simultaneously with the first cleavage
2. after entry of sperm but before fertilization
3. after fertilization
4. before entry of sperm into the ovum
Select the correct sequence for the transport of sperm cells in the male reproductive system:
| 1. | Testis → Epididymis → Vasa efferentia → Vas deferens → Ejaculatory duct → Inguinal canal → Urethra → Urethral meatus |
| 2. | Testis → Epididymis → Vasa efferentia → Rete testis → Inguinal canal → Urethra |
| 3. | Seminiferous tubules → Rete testis → Vasa efferentia → Epididymus → Vas deferens → Ejaculatory duct → Urethra → Urethral meatus |
| 4. | Seminiferous tubules → Vasa efferentia → Epididymis → Inguinal canal → Urethra |
Which of these is not an important component of initiation of parturition in humans?
1. Increase in oestrogen and progesterone ratio
2. Synthesis of prostaglandins
3. Release of oxytocin
4. Release of prolactin
No new follicles develop in the luteal phase of the menstrual cycle because :
| 1. | Follicles do not remain in the ovary after ovulation |
| 2. | FSH levels are high in the luteal phase |
| 3. | LH levels are high in the luteal phase |
| 4. | Both FSH and LH levels are low in the luteal phase |
Meiotic division of the secondary oocyte is completed:
1. At the time of copulation
2. After zygote formation
3. At the time of fusion of a sperm with an ovum
4. Prior to ovulation
Which of the following hormone levels will cause release of ovum (ovulation) from the graafian follicle?
1. High concentration of Progesterone
2. Low concentration of LH
3. Low concentration of FSH
4. High concentration of Estrogen
Match the following columns and select the correct option.
| Column-I | Column-II | ||
| a. | Placenta | (i) | Androgens |
| b. | Zona pellucida | (ii) | Human chronic Gonadotropin |
| c. | Bulbo-urethral glands | (iii) | Layer of the ovum |
| d. | Leydig cells | (iv) | Lubrication of the Penis |
| a | b | c | d | |
| 1. | (i) | (iv) | (ii) | (iii) |
| 2. | (iii) | (ii) | (iv) | (i) |
| 3. | (ii) | (iii) | (iv) | (i) |
| 4. | (ii) | (iv) | (i) | (ii) |
In human beings, at the end of 12 weeks (first trimester) of pregnancy, the following is observed:
1. Eyelids and eyelashes are formed
2. Most of the major organ systems are formed
3. The head is covered with fine hair
4. Movement of the fetus
Select the correct option of haploid cells from the following groups :
| 1. | Primary oocyte, Secondary oocyte, Spermatid |
| 2. | Secondary spermatocyte, First polar body, Ovum |
| 3. | Spermatogonia, Primary spermatocyte, Spermatid |
| 4. | Primary spermatocyte, Secondary spermatocyte, Second polar body |
Match the following columns and select the correct option:
| Column I | Column II | ||
| (a) | Ovary | (i) | Human chorionic Gonadotropin |
| (b) | Placenta | (ii) | Estrogen & Progesterone |
| (c) | Corpus luteum | (iii) | Androgens |
| (d) | Leydig cells | (iv) | Progesterone only |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iv) | (iii) | (ii) | (i) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (i) | (iii) | (ii) | (iv) |
| 4. | (ii) | (i) | (iv) | (iii) |
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