Human Reproduction for NEET UG
This chapter covers how sperm and eggs are made, the hormones of the menstrual cycle, and the journey from fertilisation to birth.
BiologyClass 1292 MCQs2 lessons13 flashcards3 memory tricks
Practise Human Reproduction free
What you'll learn
- Gametogenesis
Compare spermatogenesis and oogenesis and count the cells and chromosomes at each stage. - Menstrual cycle, fertilisation and pregnancy
Link the hormones of the menstrual cycle to ovarian and uterine changes, and trace early development.
Memory tricks
Seminiferous tubules → rete testis → vasa efferentia → epididymis → vas deferens → ejaculatory duct → urethra.
FSH: follicle growth. LH surge: ovulation. The corpus luteum makes progesterone to maintain the endometrium; without pregnancy it degenerates and menstruation follows.
A primary spermatocyte gives 4 sperm. A primary oocyte gives 1 ovum and up to 3 polar bodies, keeping most of the cytoplasm for the egg.
Try 3 NEET-style questions
Q1. The female external genitalia include
- ovaries, oviducts and uterus
- mons pubis, labia majora, labia minora, hymen and clitoris
- cervix, uterus and vagina only
- mammary glands and ovaries
Show answer
Answer: (2) mons pubis, labia majora, labia minora, hymen and clitoris
The female external genitalia are the mons pubis, labia majora, labia minora, hymen and clitoris.
Q2. The first meiotic division of a primary oocyte in the tertiary follicle is unequal. It produces
- two equal secondary oocytes
- a large haploid secondary oocyte and a tiny first polar body
- four ova
- a diploid ovum and a polar body
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Answer: (2) a large haploid secondary oocyte and a tiny first polar body
The division is unequal: the secondary oocyte retains most of the nutrient-rich cytoplasm, while the first polar body gets very little.
Q3. The first movements of the foetus and the appearance of hair on the head are usually observed during the
- first month
- second month
- third month
- fifth month
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Answer: (4) fifth month
During the fifth month the first foetal movements and hair on the head are usually observed.
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