NEET UG BIOLOGY MCQ: HUMAN REPRODUCTION

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A healthy human ejaculates sperms in semen with sperm count 80 million sperms per

{ml}

for normal fertility. How many sperms must have normal shape, size and vigorous motility per ejaculate of

3 \,{ml}

semen?

View answer and explanation

Correct option: C

57.6 million

Option C (57.6 million) is correct because for normal fertility, 60% of sperms must have normal shape, size, and vigorous motility. With a sperm count of 80 million/mL in 3 mL, the total sperm count is 240 million. 60% of 240 million is 144 million. However, the question asks for the number of sperms with normal shape, size and vigorous motility per ejaculate of 3ml semen, and the correct calculation is 240 million * 0.6 = 144 million. The question states that 80 million sperms per ml is the count for normal fertility, and 60% of the total sperms must have normal shape, size and vigorous motility. Therefore, 80 million/ml * 3 ml = 240 million sperms. 60% of 240 million = 144 million * 0.4 = 57.6 million.

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