Reproductive System
ICSE · Class 10 · Biology
Most important questions from Reproductive System for ICSE Class 10 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.
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Which of the following are functions of the placenta?
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Exchange of gases, Transfer of nutrients, Hormone secretion
The placenta facilitates gas exchange, nutrient transfer between mother and fetus, and secretes hormones like hCG, estrogen, and progesterone. It does not produce sperm or store urine.
The male reproductive system produces both sperm and hormones.
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True
True. The male reproductive system produces sperm in seminiferous tubules and testosterone hormone in Leydig cells, both functions occurring in the testes.
Which part of the sperm contains enzymes to penetrate the ovum?
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Acrosome
The acrosome at the tip of sperm head contains hyaluronidase enzyme that helps dissolve the protective layer around the ovum during fertilization.
How long is the typical menstrual cycle in humans?
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28 days
The typical menstrual cycle in humans is 28 days, though it can vary from 21 to 35 days in different individuals.
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