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 the Prophase I of Meiosis I

(3) Secondary oocytes that have been arrested at the Prophase I of Meiosis I

(4) Secondary oocytes that have been arrested at the Metaphase II of Meiosis II

 

Subtopic:  Ovary |
 86%
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What is released at ovulation?

(1) Primary oocyte arrested at meiosis I

(2) Primary oocyte arrested at meiosis II

(3) Secondary oocyte arrested at meiosis I

(4) Secondary oocyte arrested at meiosis II

 

Subtopic:  Ovary |
 55%
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 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

Subtopic:  Menstrual Cycle: Pre Ovulatory Phase |
 83%
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LH surge:

1. is a dramatic sudden increase in the levels of LH during the early part of menstrual cycle and is responsible for ovulation.

2. Is a dramatic sudden decrease in the levels of LH during the early part of menstrual cycle and is responsible for ovulation.

3 is a dramatic sudden decrease in the levels of LH during the mid-menstrual cycle and is responsible for ovulation.

4. is a dramatic sudden increase in the levels of LH during the mid-menstrual cycle and is responsible for ovulation.

 

Subtopic:  Menstrual Cycle: Pre Ovulatory Phase | Menstrual Cycle: Luteal Phase |
 78%
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Corpus luteum secretes large amounts of:

(1) LH

(2) FSH

(3) Progesterone

(4) Estrogen

 

Subtopic:  Menstrual Cycle: Luteal Phase |
 92%
From NCERT
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Consider the following two statements:
I. Not all copulations lead to fertilization and pregnancy
II. Fertilization can occur if the ovum and the sperms are simultaneously transported to the fallopian tubes.
1. Both I and II are correct and II correctly explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct

Subtopic:  Fertilization: Part 2 | Fertilization |
 81%
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What happens when a sperm enters the cytoplasm of the secondary oocyte?

(1) Release of first polar body

(2) Completion of meiosis II

(3) Degeneration of polar bodies

(4) Dissolution of zona pellucida

 

Subtopic:  Fertilization: Part 2 | Fertilization |
 83%
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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:  Sex Determination in Humans |
 82%
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Cleavage is:

(1) Dissolution of the zona pellucida

(2) A specialized mitotic division in late fetus

(3) A specialized meiotic division in late fetus

(4) A specialized mitotic division in zygote and early embryo

 

Subtopic:  Embryonic Development till Gastrulation |
 86%
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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:  Embryonic Development till Gastrulation |
 91%
From NCERT
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