Placenta is formed from
Maternal part only
Embryonic part only
Maternal and foetal portions both
None of the above
(c)Placenta is formed by interlocking of both foetal as well as maternal tissue.
Which of the following provides nutrition to sperm?
Given diagram refers to spermatogenesis and oogenesis in humans. Identify $A$ to $H$ correctly.
Sertoli cells are also called
Spermiogenesis or spermatiliosis is
Of the following animals which produces the smallest egg
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