Questions in diversity-of-life

Select	Question
	Echinodermata is a group of animals which are
	Aristotle’s lantern is connected with
	Echinoderms are headless, brainless and heartless. Yet they are placed at the top of invertebrates because of presence of
	Tube feet are the characteristic structures of
	Antedon belongs to the class
	Basket star belongs to class
	Box like calcareous test occurs in
	In which class of echinodermata stalk is found for attachment with substratum
	Bipinnaria is the larva of
	Which one of the following statement is true about an organism and its classification