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
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. |
| 1. | Only I | 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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