The correct sequence of the various phases of a typical menstrual cycle is:

1. Menstrual            Follicular            secretory            Ovulatory

2. Menstrual            Follicular            Ovulatory            secretory

3. Ovulatory            Follicular            secretory            Menstrual

4. Menstrual            secretory            Follicular            Ovulatory

Subtopic:  Introduction to Menstrual Cycle: 1 | Introduction to Menstrual Cycle: 2 | Introduction to Menstrual Cycle |
 71%
From NCERT
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During pregnancy:

1. All events of menstrual cycle stop and there is no menstruation

2. Events of menstrual cycle continue but there is no menstruation

3. Events of menstrual cycle contInue but there is menstruation only in the first trimester

4. All events of menstrual cycle stop and there is menstruation only in the first trimester

Subtopic:  Menstrual Cycle: Luteal Phase |
 86%
From NCERT
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In the absence of fertilization, corpus luteum:

 
1. Stops secreting progesterone but increases the secretion of estrogen
2. Stops secreting estrogen but increases the secretion of progesterone
3. Increases the secretion of both progesterone and estrogen
4. Degenerates
Subtopic:  Menstrual Cycle: Luteal Phase |
 76%
From NCERT
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What ensures that only one sperm can fertilize the ovum?

1. Corona radiata

2. Ground substance around ovum

3. Zona pellucida

4. Acrosome

Subtopic:  Fertilization: Part 2 | Fertilization |
 74%
From NCERT
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During pregnancy the levels of thyroxin:

1. Increase several folds in maternal blood

2. Increases several folds in fetal blood

3. Decreases several folds in maternal blood

4. Decreases several folds in fetal blood

Subtopic:  Fetal Development & Parturition |
 82%
From NCERT
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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

Subtopic:  Fetal Development & Parturition |
 78%
From NCERT
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The milk produced during the initial few days of lactation, called colostrum, is essential for the new born as colostrums contains:

1. Large amount of glucose

2. Anti-infective antibodies

3. Fats

4. Various hormones

Subtopic:  Mammary Gland & Lactation |
 92%
From NCERT
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All of the following structures are derived from mesoderm except the ____.

1. pancreas

2. dermis of skin

3. notochord

4. heart

Subtopic:  Embryonic Development till Gastrulation | Fetal Development & Parturition |
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Sperm has several components out of which the function of the acrosome is to:

1. Produce base to neutralize the acidic environment of the female reproductive system
2. Propel the sperm as they swim through the fluid of the female reproductive tract
3. Release an enzyme that breaks down the membrane of the ovum
4. Metabolise the sugars provided by the semen for energy
Subtopic:  Fertilization: Part 2 | Fertilization |
 84%
From NCERT
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At what point does the secondary oocyte complete meiosis?

1. when acrosomal enzymes begin to break down the egg's jelly coat

2. when the luteinizing hormone triggers ovulation

3 after it is penetrated by a sperm cell

4. when the secondary oocyte implants in the endometrium of the uterus

Subtopic:  Fertilization: Part 2 | Fertilization |
 67%
From NCERT
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