In oogenesis, when a diploid cell undergoes meiosis, how many ova result?

1. 1

2. 2

3. 3

4. 4

Subtopic:  Ovary |
 79%
From NCERT
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Identify the incorrectly matched pair:

1.

Ovulation

LH surge

2.

Follicular phase of menstrual cycle

Regeneration of endometrium

3.

Luteal phase

Secretion of FSH

4.

Menstruation

Withdrawal of progesterone

Subtopic:  Menstrual Cycle: Pre Ovulatory Phase | Menstrual Cycle: Luteal Phase |
 76%
From NCERT
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The corpus luteum produces _______________, which inhibits ovulation.

1. LH

2. FSH

3. estrogen

4. Progesterone

Subtopic:  Menstrual Cycle: Luteal Phase |
 91%
From NCERT
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Which of the following is the correct sequence for the development and regression of an ovarian follicle?

1. primordial follicle, mature vesicular ovarian follicle, corpus albicans, and corpus luteum
2. primordial follicle, mature vesicular ovarian follicle, corpus luteum, and corpus albicans
3. primordial follicle, corpus luteum, corpus albicans, and mature vesicular ovarian follicle
4. primordial follicle, corpus luteum, mature vesicular ovarian follicle, and corpus albicans

Subtopic:  Introduction to Menstrual Cycle: 1 | Menstrual Cycle: Pre Ovulatory Phase | Menstrual Cycle: Luteal Phase |
 75%
From NCERT
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Menstrual bleeding is the result of 

1. low levels of ovarian hormones
2. high levels of ovarian hormones
3. high levels of LH
4. high levels of FSH

Subtopic:  Introduction to Menstrual Cycle: 2 | Introduction to Menstrual Cycle |
 70%
From NCERT
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If mammalian ovum fails to get fertilized, which one of the following is unlikely -

1. Estrogen secretion further decreases

2. Progesterone secretion rapidly declines

3. Corpus luteum will disintegrate

4. Primary follicle starts developing

Subtopic:  Introduction to Menstrual Cycle: 2 | Introduction to Menstrual Cycle |
From NCERT
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The fetal body is covered with fine hair, eyelashes separate, and eyelashes are formed by the end of:

(1) 20 weeks

(2) 24 weeks

(3) 28 weeks

(4) 30 weeks

Subtopic:  Fetal Development & Parturition |
 90%
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:  Embryonic Development till Gastrulation |
 93%
From NCERT
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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 |
 89%
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%
From NCERT
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