STD 12 - 7. human health and disease — BIOLOGY STD 12 Science — Question

Statement $I$: The presence or absence of hymen is not a reliable indicator of virginity.

Statement $II$: The hymen is torn during the first coitus only.

In the light of the above statements, choose the correct answer from the options given below :

$I$. They inhibit ovulation and implantation

$II$. They alter the quality of cervical mucous to prevent or retard the entry of sperms

$III$. They prevent the ejaculated semen from entering the female vagina

$IV$. They inhibit spermatogenesis