The rule of embryonic development was given by
Von baer
Haeckel
Wallace
Morgan
In the embryonic development of chordate the animal pole forms one of the following of the adult
An antrum is the characteristic of ...follicles
Read the following paragraph with two blanks : Each testis has about $A$ compartments called as testicular lobules. Each lobule contains $B$ highly coiled seminiferous tubules in which the sperms are produced. The correct option for the two blanks is
$A$ | $B$ |
Sertoli's cell are regulated by the pituitary hormone known as
Which one of the following is derived from ectoderm