Q. No.The figure shows a section of the human ovary. Select the option which gives the correct identification of A and B with function/characteristic:
1.
B - Corpus luteum - secretes progesterone
2.
A - Tertiary follicle - forms Graafian follicle
3.
B - Corpus luteum - secretes LH
4.
A - Primary oocyte - it is the prophase - I of the meiotic division
1. oxytocin from foetal pituitary
2. human Chorionic Gonadotropin (hCG) from placenta
3. human Placental Lactogen (hPL) from placenta
4. oxytocin from maternal pituitary
About which day in a normal human menstrual cycle does rapid secretion of LH (popularly called LH-surge) normally occurs?
1. 11th day
2. 14th day
3. 20th day
4. 5th day
What happens during fertilisation in humans after many sperms reach close to the ovum?
| 1. | Only two sperms nearest the ovum penetrate zona pellucida |
| 2. | Secretions of acrosome help one sperm enter the cytoplasm of the ovum through zona pellucida |
| 3. | All sperms except the one nearest to the ovum lose their tails |
| 4. | Cells of corona radiata trap all the sperms except one |
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
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
In a human female, the blastocyst:
| 1. | gets implanted into uterus three days after ovulation |
| 2. | gets nutrition from uterine endometrial secretion only after implantation |
| 3. | gets implanted in endometrium by the trophoblast cells |
| 4. | forms placenta even before implantation |
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 |
The secretory phase in the human menstrual cycle is also called:
| 1. | Follicular phase lasting for about 6 days |
| 2. | Luteal phase and lasts for about 13 days |
| 3. | Follicular phase and lasts for about 13 days |
| 4. | Luteal phase and lasts for about 6 days |
The part of the Fallopian tube closest to the ovary is:
1. Isthmus
2. Infundibulum
3. Cervix
4. Ampulla
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