The blastopore develops into future
Mouth
Ear
Anus
Neuropore
In which animal the testes are abdominal during embryonic stages but migrate to scrotum just before birth where they remain throughout life
Each seminiferous tubule is lined on its inside by two types of cells $A$ and $B$. Which of the following options is correct, w.r.t. the type of cell and its function?
$A$ | $B$ |
Chorion is found
Which of the following are secretions produced by the spermatozoa at the time of fertilization?
Chorion is composed of