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Hemichordates posses the characters of e...

Hemichordates posses the characters of echinoderms and chordates. Write any 3 characters of echinoderms as well as chordates seen in hemichordates.

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Similar characters of echinoderms and chordates seen in hemichordates are:
1. Marine animals.
2. Bilaterally symmetrical.
3. Presence of Nerve cord.
4. Open type circulatory system.
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