A hatching egg of chick is covered by plaster of paris. It is harmful for
Mother
Respiration
Excretion
None of these
(b)Egg shell is porous; if it is covered, the passage of air will be blocked.
Withdrawal of which of the following hormones is the immediate cause of menstruation?
Function of gynogamone$-I$ is
Which cavity arises by the invagination of endoderm and mesoderm
Blastopore is found in
Ectopic pregnancies are referred to as
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