The capsule enclosing testis of mammal is called as
Tunica albuginea
Tunica membrana
Tunica vaginalis
Tunica vesculosa
Give the name of two hormones $A$ and $B$ in the figure given below
The cleavage having incomplete division of egg is known as
Internal ear develops from
First polar body is produced during the formation of
The central nervous system develops as a result of