Diversity in the Living World

Phylum Echinodermata

Star fish

Marine in habitat.

Body is radially symmetrical, star shaped, spherical or elongate, Exoskeleton is spiny.

Head is absent and five radially arranged arms present.

Locomotion is with the help of tube feet.

Sexes are separate.

Example: Asterias (star fish), Echinus (sea urchin),

Holothuria (sea cucumber), Antedon (feather star)

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	Introduction
	Importance of Classification
	Nomenclature
	Classification of Plants and Animals
	Plant Kingdom
	Animal Kingdom
	Phylum Protozoa (Primitive Animals)
	Phylum Porifera (Sponges)
	Phylum Coelenterata (Cridaria)
	Phylum Platyhelminthes (Flatworms)
	Phylum Aschelminthes (Round or Thread Worm)
	Phylum Annelida (Segmented Worms)
	Phylum Arthropoda (Animals with Jointed Legs)
	Phylum Mollusca
	Phylum Echinodermata
	Phylum Hemichordata
	Phylum Chordata
Animations
	Classification of Plants
	Classification of Animals

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