Human Reproduction and Development - Competitive Exam Level
Q. At what stage of development does the heart begin to beat in a human embryo?
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A.
2 weeks
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B.
4 weeks
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C.
6 weeks
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D.
8 weeks
Solution
The heart begins to beat around 4 weeks of embryonic development.
Correct Answer: B — 4 weeks
Q. What is the function of the placenta during pregnancy?
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A.
To provide oxygen and nutrients to the fetus
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B.
To produce hormones
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C.
To remove waste products from the fetus
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D.
All of the above
Solution
The placenta serves multiple functions including nutrient and gas exchange, hormone production, and waste removal.
Correct Answer: D — All of the above
Q. What is the role of the amniotic fluid?
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A.
To provide nutrients
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B.
To cushion the fetus
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C.
To facilitate gas exchange
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D.
To produce hormones
Solution
Amniotic fluid cushions the fetus, providing protection and allowing for movement.
Correct Answer: B — To cushion the fetus
Q. What is the term for the process by which a sperm and egg fuse?
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A.
Fertilization
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B.
Cleavage
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C.
Gastrulation
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D.
Implantation
Solution
Fertilization is the process where a sperm cell fuses with an egg cell to form a zygote.
Correct Answer: A — Fertilization
Q. Which of the following is NOT a method of assisted reproductive technology?
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A.
In vitro fertilization
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B.
Intracytoplasmic sperm injection
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C.
Artificial insemination
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D.
Natural conception
Solution
Natural conception is not considered a method of assisted reproductive technology, while the others are.
Correct Answer: D — Natural conception
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