In humans, at the end of the first meiotic division, the male germ cells differentiate into the
Primary spermatocytes
Secondary spermatocytes
Spermatids
Spermatogonia
In rabbit, head of the epididymis present at the head of the testis is called
Name $A, B, C$ chormones in the given figure
Type of cleavage found in mammals is
Which of the following is an embryonic connective tissue
When a foetus develops limbs and digits?