Which of the following is an organ of hearing as well as balancing?

The first body segment of the earthworm is the _____

Larvae are formed during the development of earthworms. True or false?

What does the question mark in the given diagram represent?

Which of these characteristics is true about the vascular system of cockroach?

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

The nuclei of columnar epithelial cells are located at the base.

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