Mention the function of the following
Malpighian tubules
Malphigian tubules: Malphigian tubules are excretory organs in cockroaches.
Identify $X$ and $Y$
Draw a neat and well labelled diagram of male reproductive system of a frog.
Phallic organs in cockroach are related to
Heart of cockroach is........
In female ......... and ....... sterna forms a genital pouch