Phylum Arthropoda - Questions & Answers | Exam2Win

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361. Ambulacral grooves are absent in

A. Asteroidea

B. Crinoidea

C. Ophiuroidea

D. Nautiloidea

Explanation:

362. Star Fish belongs to

A. Asteriodea

B. Ophiuroidea

C. Holothuroidea

D. Crinoidea

Explanation:

363. Echinoderms are

A. Fresh water forms

B. Both fresh water and marine

C. Exclusively marine

D. None of the above

Explanation:

364. The adults are radially symmetrical but larvae exhibit bilateral symmetry in

A. Mollusca

B. Hemichordata

C. Echinodermata

D. Cephalochordata

Explanation:

365. Which one is an ophiuroid?

A. Brittle Star

B. Sea Star

C. Sand Dollar

D. Sea Urchin

Explanation: