The structure which differentiate gastrula from blastula
3 germ layers
Micromeres
Blastocoel
None of these
Testis and ovary lie
The changes that occurs in female at the onset of puberty are
Draw a neat diagram of the female reproductive system and label the parts associated with the following
$(a)$ production of gamete, $(b)$ site of fertilisation $(c)$ site of implantation and, $(d)$ birth canal.
The part of Fallopian tube closest to the ovary is
$A$ : Presence or absence of hymen is not a reliable indicator of virginity or sexual experience.
$R$ : It can be broken down by a sudden fall or jolt, insertion of a vaginal tampon, or active participation in some sports like horse riding.