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Byju's Answer
Standard XII
Biology
Kingdom Animalia
Give an accou...
Question
Give an account of Phylum Echinodermata.
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Solution
The phylum Echinodermata has the following features:
1. These are exclusively marine animals.
2. They are triploblastic and coelomate animals.
3. The larvae are bilaterally symmetrical while the adults are radially symmetrical.
4. They have organ system level of body organization.
5. They have spiny body and the endoskeleton is made of calcareous ossicles.
6. They possess water vascular system and tube-feet that help them to move and attach to the substratum.
Example- startfish, sea-urchin etc.
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