Testicular degeneration and other disorders of reproductive system in mammals are due to the deficiency of
Vitamin $A$
Vitamin $B$
Vitamin $K$
Vitamin $E$
(d) Also known as antisterility vitamin.
Type of placenta in the human is
Eye is developed from
Which of the following is the endocrine tissue of testes
The allantois has the similar layers as present in the yolk sac. These are
What helps in the penetration of egg by the sperm
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