(A) The vaginal environment is acidic,which is hostile to sperm survival and motility. Upon ejaculation into the vagina,the acidic pH (typically $3.8$

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(A) The vaginal environment is acidic,which is hostile to sperm survival and motility. Upon ejaculation into the vagina,the acidic pH (typically $3.8$ to $4.5$) causes the sperms to lose their motility relatively quickly. Research indicates that sperms typically become non-motile within $60$ minutes of being deposited in the vagina.

Class 12 Biology Human Reproduction Mix Examples-Human Reproduction

Medium

Sperms become non-motile in the vagina in

A
Less than $60$ minutes
B
More than $60$ minutes
C
$120$ minutes
D
$25-30$ hours

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Biology Questions

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Human Reproduction

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Mix Examples-Human Reproduction

Match column-$I$ with column-$II$ and select the correct option using the codes given below.

Column-$I$ Column-$II$

$(A)$ Mons pubis $(i)$ Embryo formation

$(B)$ Antrum $(ii)$ Sperm

$(C)$ Trophectoderm $(iii)$ Female external genitalia

$(D)$ Nebenkern $(iv)$ Graafian follicle

Column-$I$	Column-$II$
$(A)$ Mons pubis	$(i)$ Embryo formation
$(B)$ Antrum	$(ii)$ Sperm
$(C)$ Trophectoderm	$(iii)$ Female external genitalia
$(D)$ Nebenkern	$(iv)$ Graafian follicle