Spermatogenesis starts at the age of pub...

Spermatogenesis starts at the age of puberty due to significant increase in the secretion of

somatostatin from hypothalamus

GnRH from hypothalamus

GnRH from the anterior pituitary

sexcorticoids from the adrenal gland

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Spermatogenesis starts at the age of ul((A)) due to significant increase in the secretion of ul((B)) .

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How many of the given statements are incorrect ? I. The cavity of the cervix is called cervical canal which along with vagina forms the birth canal. II. Spermatogenesis starts at the age of puberty. III. At puberty, only 60,000-80,000 primary follicles are left in female body. IV. In the early phase of pregnancy, a hormone called relaxin is also secreted by the ovary.

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