Question

In which of the following organisms, the feature of menstrual cycle during sexual reproduction is observed?
(a) Most seasonal breeders
(b) Human females
(c) Old-world monkeys and apes
(d) Tiger

• A. (b), (c) & (d)
• B. (b) & (c)
• C. (c) & (d)
• D. (a) & (b)

Answer 1

Answer: (B)

The reproductive cycle in the female primates (e.g. monkeys, apes and human beings) is called menstrual cycle. In non-primate mammals like cows, sheep, rats, deers, dogs, tiger, etc., such cyclical changes during reproduction are called oestrus cycle.