In cockroach, excretion is brought about by-
$A$. Phallic gland $B$. Urecose gland $C$. Nephrocytes $D$. Fat body $E$. Collaterial glands
Choose the correct answer from the options given below :
$B$ and $D$ only
$A$ and $E$ only
$A,B$ and $E$ only
$B,C$ and $D$ only
The nymph grow by mouthing about..... to reach the adult form
Tegmina in cockroach, arises from :
Mention structure of heart and path of transport in cockroach.
Describe reproductive system of cockroach in detail.
Choose incorrect answer about characters shown in cockroach.