Which one of the following is the most widely accepted method of contraception in India, at present?
Tubectomy
Diaphragm
$IUDs$ (intra uterine devices)
Cervical caps
The extra-embryonic membranes of mammalian embryo are derived from
Egg of rabbit and man are
The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for
Identify the hormones that are secreted in large amount prior to ovulation :
$A.$ $LH$
$B.$ $FSH$
$C.$ $Estrogen$
$D.$ $Progesterone$
The fluid filled in the blastocoel cavity of blastula is