I need some info on echinoderms for science...help?

Question

Anyone wanna give me some USEFUL information on echinoderms?

Me and my SCIENCE partner would really appreciate it.

--LaKriesha (Lah-kree-shah) and Shanequah (Sha-nee-cwah)

Answer 1

these are some brief infos taht i have have taken during my second year:

examples: starfish

brittle star

sea urchin

sand dollar

sea lily

descriptions:

mostly radially symmetrical

usually have 5  arms, others have more, some without arms but are shaped like a ball; falttened at belly side

their bodies are supported by exoskeleton or skeleton of hard plates modified into spines

they are capable of:

autotomy: self-cutting of their body parts

regeneration: the growing of lost body parts...

their impact/importance:

they are:

food

decorations

poison

corals

degenerating

that's all from my brain! there are lots that you can find here in the net though! here is the link:

http://en.wikipedia.org/wiki/Echinoderma...

that's all! hope i helped! good luck!