How many chambers are present in a frog’s heart?

How many ommatidia are present in the compound eyes of the cockroach?

In which abdominal segment are the anal cerci present in cockroach?

What is the main role of setae in earthworm?

In how many segments is the body of cockroach divided?

The fusion of how many segments makes up the head part of cockroach?

Which of these is a cellular aggregation in frog?

Frogs are __