To ensure effectiveness of reproduction in mammals
Formation of yolk sac
Retention of yolk sac
Reduced number of egg
Formation of placenta
It's Obvious
Coelom is found between the cavity of
The shock absorber fluid of the developing embryo is known as
The chemical substance found in the surface layer of cytoplasm of spermatozoa is
Saheli is a
The following graph of relative concentrations of the four hormones present in the blood plasma of a woman during her menstrual cycle. Identify the hormones $A, B, C$ and $D$
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