Phylum Arthropoda - Questions & Answers | Exam2Win

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286. A distinct anus is absent in echinoderms

A. Asteroidea

B. Ophiuroidea

C. Echinoidea

D. Holothuroidea

Explanation:

287. Respiratory tree occurs in

A. Holothuroidea

B. Echinoidea

C. Ophiuroidea

D. Crinoidea

Explanation:

288. Pedicellariae take part in

A. Cutting food

B. Holding substratum

C. Removing debris

D. All the above

Explanation:

289. Star Fish is predator of

A. Clams and Oysters

B. Crabs

C. Devil Fish

D. Mosquitoes

Explanation:

290. An animal which periodically casts off its exoskeleton is

A. Unio

B. Fish

C. Fasciola

D. Cockroach

Explanation: