Is there a larval stage in echinoderms?

Is there a larval stage in echinoderms?
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In echinoderms embryonic development is indirect, with ciliated larvae.
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Under which environments do echinoderms live?

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The canal system is a characteristic feature of (a) echinoderms (b) sponges (c) helminthes (d) coelenterates.

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Select the taxon mentioned that represents both marine and fresh water species. (a) Echinoderms (b) Ctenophora (c) Cephalochordata (d) Cnidaria

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Last Answer : (d) Cnidaria

Which of the following animals are true coelomates with bilateral symmetry? (a) Adult Echinoderms (b) Aschelminthes (c) Platyhelminthes (d) Annelids

Description : Which of the following animals are true coelomates with bilateral symmetry? (a) Adult Echinoderms (b) Aschelminthes (c) Platyhelminthes (d) Annelids

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