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

What are the pores present on the surface of the body of the earthworm called?

How many types of nephridia are present in the earthworm?

Using earthworms to increase soil fertility is called __

How many ova does a female frog lay at a time?

Organization helps in the efficient and coordinated working of different types of cells. True or false?

Frogs are __

Which of these structures act as the tongue of the cockroach?