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Wednesday, 19 August 2026
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Biology Past Questions and Answers

Topic: Reproduction in mammals

Jamb Biology Questions - Reproduction in mammals

Question 31:
The absence of anti-diuretic hormone in humans results in
  • A Decreasing dehydration
  • B Drastic dehydration
  • C Eliminating dehydration
  • D Increasing dehydration
View Answer & Explanation
Question 32:
Oestrogen is a hormone that is synthesized in the
  • A Ovaries
  • B Testes
  • C Anterior pituitary
  • D Adrenal cortex
View Answer & Explanation
Question 33:
A couple has 10 children, all female. Which of the following best explains the situation
  • A The sex determination was by the man's X chromosome
  • B The man's sperm count is low
  • C The woman is not capable of producing male children
  • D The sex determination was by the man's Y chromosome
View Answer & Explanation
Question 34:
Which of the following is not part of the mammalian male reproductive organ?
  • A Epididymis
  • B Vas deferens
  • C Testis
  • D Vulva
View Answer & Explanation
Question 35:
One of the following is called emergency hormone in man.
  • A Adrenalin
  • B Prolactin
  • C Testosterone
  • D Thyroxine
View Answer & Explanation