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Q. No.What is the usual number of primary follicles in both ovaries of a female at puberty?
1. 60000 – 80000 2. 120000 – 160000 3. 1 million to 2 million 4. About 7 million
Subtopic: oogenesis |
From NCERT
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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 |
Subtopic: Fertilization |
91%
From NCERT
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At the birth of the female child, the follicles in her ovaries contain:
| 1. | Primary oocytes that have been arrested at the S phase of the cell cycle |
| 2. | Primary oocytes that have been arrested at prophase I of meiosis I |
| 3. | Secondary oocytes that have been arrested prophase I of meiosis I |
| 4. | Secondary oocytes that have been arrested at metaphase II of meiosis II |
Subtopic: Ovary |
87%
From NCERT
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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
Subtopic: Introduction to Menstrual Cycle |
82%
From NCERT
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Consider the following statements:
| I: | Menstruation only occurs if the released ovum is not fertilized. |
| II: | Lack of menstruation always indicates pregnancy. |
Of the given statements, the correct statements is/are:
| 1. | I only | 2. | II only |
| 3. | I and II | 4. | None |
Subtopic: Introduction to Menstrual Cycle: 1 | Introduction to Menstrual Cycle: 2 |
81%
From NCERT
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The menstrual cycle starts with the:
| 1. | Follicular phase | 2. | Menstrual phase |
| 3. | Ovulatory phase | 4. | Secretory phase |
Subtopic: Menstrual Cycle: Pre Ovulatory Phase | Menstrual Cycle: Luteal Phase |
82%
From NCERT
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Cleavage is:
| 1. | Dissolution of the zona pellucida |
| 2. | A specialized mitotic division in the late fetus |
| 3. | A specialized meiotic division in the late fetus |
| 4. | A specialized mitotic division in the zygote and early embryo |
Subtopic: Implantation : Part 1 |
88%
From NCERT
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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 |
Subtopic: Implantation |
92%
From NCERT
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The trophoblast cells of the blastocyst form:
| 1. | Embryo | 2. | Umbilical cord |
| 3. | Placenta | 4. | Teratoma |
Subtopic: Implantation |
64%
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Subtopic: Implantation |
86%
From NCERT
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