In embryonic stage RBC develops in
Liver and kidney
Liver and spleen
Spleen and kidney
Liver and pancreas
The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for
Give the names and functions of the hormones involved in the process of spermatogenesis. Write the names of the endocrine glands from where they are released.
During pregnancy which one of the following is excreted?
Which one of the following is derived from ectoderm
$A$ : The first sign of growing foetus may be noticed by listening to the heart sound through the stethoscope.
$R$ : By the end of second month of pregnancy, the foetus develops limbs and digits.