The water vascular system of echinoderms

Vertebrates and tunicates share

Salamander belongs to the class:

Radial symmetry is found in

Which of the following characters is not typical to class Mammalia?

Periplaneta belongs to which phylum?

Notochord occurs throughout life and all through the length of the body in

Cnidaria is characterized by

Ascaris lumbricoides lives in the intestine of

The body cavity of Ascaris is pseudocoel because