KINGDOM ANIMALIA
Phylum Echinodermata
Echinoderms have an external skeleton
with many spines.They have a complex
nervous system. The echinoderms are
"spiny-skinned" marine animals that
mostly live on sand or rocks.
They have mobile tube feet and
an external skeleton embedded under
the skin.They have a mouth to take in
food and sometimes to give out waste.
Echinodermata : Greek-echinos,
sea urchin; derma, skin
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Montessori Biology
