Home › CBSE Class 12 (Science) › Biology › Human Reproduction › For normal fertility, at least what share of spe…
For normal fertility, at least what share of sperms must show vigorous motility?
A80 per cent
B40 per cent
C60 per cent
D20 per cent
Answer & Solution
Correct answer: B. 40 per cent
Normal fertility needs at least 40 per cent motile sperms, while 60 per cent must be of normal shape and size.
Related questions
Which hormone released by the maternal pituitary strengthens uterine contractions at birthIn which month are first foetal movements and head hair usually seen?By when is the human embryo's heart formed?The inner cell mass first differentiates into which two layers?Which hormone is produced in women only during pregnancy?Which finger-like projections on the trophoblast help form the placenta?Embedding of the blastocyst in the endometrium is called what?The outer layer of cells in a blastocyst is called what?