Phylum Arthropoda - Questions & Answers | Exam2Win

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316. Arms are absent in

A. Feather Star

B. Brittle Star

C. Star Fish

D. Sea Dollar

Explanation:

317. Dermal branchiae (papulae) present in Star Fish take part in

A. Respiration

B. Excretion

C. Both A and B

D. Producing current of water

Explanation:

318. Arms are highly fragile in

A. Ophiothrix

B. Asterias

C. Antedon

D. All the above

Explanation:

319. Echinus is like a

A. Spiny ball

B. Spiny disc

C. Smooth ball

D. Smooth disc

Explanation:

320. In Star Fish the upper side contains

A. Mouth

B. Mouth and ambulacral grooves

C. Anus

D. Anus and madreporite

Explanation: