Vegetal hemisphere of egg consists of
Yolk
Pigment
Grey crescent
Germinal vesicle
(a) Frog egg consists of pigmented animal hemisphere and yolky vegetal hemisphere.
Structure connecting the foetus to placenta is
$A$ : Oxytocin acts on the uterine muscles and cause stronger uterine contractions, which in turn stimulates further secretion of oxytocin. $R$ : Oxytocin is released from maternal pituitary
Which one of the following statements is incorrect about menstruation?
A change in the amount of yolk and its distribution in the egg will affect
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