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) |
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 |
Identify the human development stage shown below as well as the related right place of its occurrence in a normal pregnant woman, and select the right option for the two together:
Developmental stage | Site of occurrence | |
1. | Blastula | End part of fallopian tube |
2. | Blastocyst | Uterine wall |
3. | 8-celled morula | Starting point of fallopian tube |
4. | Late morula | Middle part of fallopian tube |
Secretions from which one of the following are rich in fructose, calcium and some enzymes:
1. Liver
2. Pancreas
3. Salivary glands
4. Male accessory glands
Signals from fully developed foetus and placenta ultimately lead to parturition which requires the release of:
1. Oxytocin from maternal pituitary
2. Oxytocin from foetal pituitary
3. Relaxin from the placenta
4. Estrogen from placenta