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Echinodermata (body (Symmetry (Adult (radial), Larvae (Bilateral)), have…
Echinodermata
body
have an endoskeleton of calcerous ossicles
hence the name (Echinodermata - Spiny bodied)
organ system level
Symmetry
Adult
radial
Larvae
Bilateral
Triploblastic
Coelomate
Life Processes
Digestion
complete with mouth on lower (ventral) side and anus on upper (dorsal side)
Excretion
excretory system is absent.
Reproduction
sexual
Fertilisation is usually external
Indirect development with free swimming larva
Water Vascular System
most distinctive feature of echinoderms
helps in
locomotion
capture and transport of food
respiration
MISC.
Habitat
Marine
Examples
Asterias
(Star fish)
Echinus
(Sea urchin)
Antedon
(Sea lily)
Cucumaria
(Sea cucumber)
Ophiura
(Brittle star)