Antifertilizins are contained in
Spermatozoa
Ovary
Testis
Germinal epithelium
Human female reaches menopause at the age of about
Match the following with correct combination
Column $-I$ | Column $-II$ |
$(a)$ Hyaluronidase | $(i)$ Acrosomal reaction |
$(b)$ Corpus luteum | $(ii)$ Morphogenetic movements |
$(c)$ Gastrulation | $(iii)$ Progesterone |
$(d)$ Capacitation | $(iv)$ Mammary gland |
(e) Colostrum | $(v)$ Sperm activation |
Extra embryonic membrane amnion is not found in amphibians because
Why do all copulations not lead to fertilisation and pregnancy? The root cause is _________.
Fleshy folds of tissue which extends down the mons pubis and surrounds the vaginal opening is called