Which of the following muscle is represented in the given diagram?

How many ganglia lie in the thorax and abdomen respectively in cockroach?

Which of the following structures protect the eyes of frog in water?

Frogs have a lymphatic system. True or false?

Clitellum is a __

The buccal cavity of the earthworm leads to the _____

Which of the following structures does the given figure represent?

Which of these statements is true with respect to frog?