Bidder’s canal is found in
Testes of frog
Kidney of frog
Ovary of mammal
Kidney of mammal
(b) At the medial side of frog’s kidney, Bidder’s canal is present into which the vasa efferentia open.
Placenta secretes
Which one of the following is the most widely accepted method of contraception in India, at present?
At what stage the primitive streak in the chick embryo is formed
Cu ions released from copper- releasing Intra Uterine Devices $(IUDs)$
From which layer of the embryo do the liver and pancreas develop
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