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

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

Segments 18-19 are called as clitellar segments.

Microvilli is present in the epithelium of ___

Which of the following tissues is derived from all the three germinal layers?

Which of the following is not a function of fibres of connective tissue?

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

What is the function of typhlosole in earthworm?