Sperms become non-motile in the vagina in
Less than $60$ minutes
More than $60$ minutes
$120$ minutes
$25-30$ hours
It's Obvious
After ovulation Graafian follicle transforms into
Which of the following is the group of external genitalia in human female?
Rapid secretion of $LH$ in ovulation causes
$A$ : Corticotrophin releasing hormone is a part of the clock that establishes the timing of birth. $R$ : The signals for parturition originate from the fully developed foetus and placenta which induce mild uterine contractions called foetal ejection reflex.
The chemical substance found in the surface layer of cytoplasm of spermatozoa is
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