Q173 / 180 · AIIMS 2019 (26 May) · Zoology

Assertion: Human male ejaculates about 5-10 million sperms during coitus. Reason : For normal fertility, at least 40 per cent sperms must have normal shape and size.

  • A
    If both assertion and reason are true and reason is the correct explanation of assertion.
  • B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • Correct answer
    D
    If both assertion and reason are false.

Solution

A single ejaculation of semen by male contains 200 to 300 million sperms of which for normal fertility at least 60 per cent sperms must have normal shape and size and at least 40 per cent of them must show vigorous motility.

Hence, the correct answer is option: 'D'.

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