Which of this is not a distinguishing feature of a male frog?

Which of these is not a characteristic feature of Rana tigrina?

Using earthworms to increase soil fertility is called __

Cockroach is a(n) ___

Which of these is not a structural classification of simple epithelium?

Segments 18-19 are called as clitellar segments.

In how many segments is the body of cockroach divided?

The cockroach body is covered by an exoskeleton made of __