Q. No.What ensures that only one sperm can fertilize the ovum?
1. Corona Radiata
2. Ground substance around ovum
3. Zona pellucida
4. Acrosome
1. Corona Radiata
2. Ground substance around ovum
3. Zona pellucida
4. Acrosome
Fertilization occurs at:
1. Infundibulum of the fallopian tube
2. Ampullary – isthmic junction of the fallopian tube
3. Fundus of the uterus
4. Body of the uterus
In humans, the sex of the baby is determined:
| 1. | At the time of fertilization and by the father |
| 2. | At the time of fertilization and by the mother |
| 3. | At the time of implantation and by the father |
| 4. | At the time of implantation and by the mother |
During the follicular phase of the menstrual cycle, which of the following occur?
| I: | The primary follicle grows and becomes a fully mature Graafian follicle. |
| II: | The endometrium of the uterus regenerates through proliferation. |
2. Only II
3. I and II
4. None
Morula is a solid ball of cells during early embryonic development and consists of:
| 1. | 4 – 8 cells | 2. | 8 – 16 cells |
| 3. | 24 – 30 cells | 4. | 60 – 72 cells |
The trophoblast cells of the blastocyst form:
| 1. | Embryo | 2. | Umbilical cord |
| 3. | Placenta | 4. | Teratoma |
The first movements of the fetus and the appearance of hair on the head are usually observed during:
| 1. | 2nd month | 2. | 3rd month |
| 3. | 5th month | 4. | 6th month |
Which of the following is not produced in the woman only during pregnancy?
| 1. | hCG | 2. | hPL |
| 3. | Relaxin | 4. | Oxytocin |
In human beings, the embryo heart is formed about after ________ of pregnancy.
| 1. | One month | 2. | Two months |
| 3. | First trimester | 4. | Second trimester |
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