Q. No.In which part of the human female reproductive system do the following events take place?
A. Release of semen by penis.
B. Release of a tiny first polar body.
C. Release of second polar body.
D. Implantation.
Identify the correct option for A, B, C and D:
| A | B | C | D | |
| 1. | Cervix | Ovary | Ovary | Uterus |
| 2. | Cervix | Abdominal cavity | Fallopian tube | Uterus |
| 3. | Vagina | Ovary | Abdominal cavity | Uterus |
| 4. | Vagina | Ovary | Isthmis-ampullary junction of fallopian tube |
Uterus |
Subtopic: Fertilization | Implantation | oogenesis |
78%
Level 2: 60%+
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Implantation refers to:
| 1. | The embedding of the embryo into the endometrium. |
| 2. | The fusion of sperm and egg. |
| 3. | The formation of the blastocyst. |
| 4. | The beginning of the menstrual cycle. |
Subtopic: Implantation |
93%
Level 1: 80%+
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Implantation of the human embryo in the uterus occurs at the stage of:
1. Zygote
2. Morula
3. Blastocyst
4. Gastrula
1. Zygote
2. Morula
3. Blastocyst
4. Gastrula
Subtopic: Fertilization | Implantation |
83%
Level 1: 80%+
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Regarding blastocysts:
1. Only A is correct
2. Only B is correct
3. Both A and B are correct
4. Both A and B are incorrect
| A: | The trophoblast layer gets attached to the endometrium. |
| B: | The inner cell mass gets differentiated as the embryo. |
2. Only B is correct
3. Both A and B are correct
4. Both A and B are incorrect
Subtopic: Embryonic Development till Gastrulation | Implantation |
94%
Level 1: 80%+
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| Assertion(A): | In humans, all copulations cannot lead to fertilisation and pregnancy. |
| Reason(R): | Fertilisation can only occur if the ovum and sperms are transported simultaneously to the ampullary region of oviduct. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are true and (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | Both (A) and (R) are false. |
Subtopic: Implantation |
94%
Level 1: 80%+
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Identify the part in the human body shown in the event in the given figure and name the event.
1. Fallopian tube, fertilization
2. Ovary, ovulation
3. Uterus, implantation
4. Fimbria, ovulation
1. Fallopian tube, fertilization
2. Ovary, ovulation
3. Uterus, implantation
4. Fimbria, ovulation
Subtopic: Implantation |
91%
Level 1: 80%+
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Match the following and choose the correct option:
| Column I | Column II | ||
| A. | Trophoblast | i. | Embedding of blastocyst in the endometrium |
| B. | Cleavage | ii. | Group of cells that would differentiate as embryo |
| C. | Inner cell mass | iii. | Outer layer of blastocyst attached to the endometrium |
| D. | Implantation | iv. | Mitotic division of zygote |
1. A-ii, B-i, C-iii, D-iv
2. A-iii, B-iv, C-ii, D-i
3. A-iii, B-i, C-ii, D-iv
4. A-ii, B-iv, C-iii, D-i
Subtopic: Implantation |
91%
Level 1: 80%+
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During fertilization, polyspermy is prevented after the entry of the first sperm by:
| 1. | Secretion of enzymes by the oviduct to block sperm entry. |
| 2. | Hormonal changes in the cervix to inhibit sperm passage. |
| 3. | Rapid fragmentation of the zona pellucida post-fertilization. |
| 4. | Changes in the zona pellucida to block additional sperm. |
Subtopic: Fertilization | Implantation |
87%
Level 1: 80%+
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The function of trophoblast in blastocyst formation is to:
| 1. | Form the embryo proper by mitotic divisions |
| 2. | Differentiate into extraembryonic mesoderm and yolk sac only |
| 3. | Establish connection with maternal endometrium for implantation and nutrition |
| 4. | Secrete estrogen and progesterone for maintaining pregnancy independently |
Subtopic: Fertilization | Implantation |
81%
Level 1: 80%+
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Which part of the blastocyst is responsible for attaching to the endometrium during implantation?
1. Inner cell mass
2. Blastocoel
3. Trophoblast
4. Morula
1. Inner cell mass
2. Blastocoel
3. Trophoblast
4. Morula
Subtopic: Implantation |
84%
Level 1: 80%+
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