Phylum Arthropoda - Questions & Answers | Exam2Win

Take a timed mock test specifically for Phylum Arthropoda.

281. Three jawed pedicellariae occur in

A. Asteroidea

B. Crinoidea

C. Echinoidea

D. Holothuroidea

Explanation:

282. Exoskeleton of echinoderms is

A. Chitinous

B. Siliceous

C. Calcareous

D. None of the above

Explanation:

283. A blind sac body plan occurs in

A. Echinoidea

B. Asteroidea

C. Ophiuroidea

D. Crinoidea

Explanation:

284. Tube feet are without suckers in

A. Echinoidea

B. Ophiuroidea

C. Crinoidea

D. Both B and C

Explanation:

285. Attached echinoderms occur in class

A. Echinoidea

B. Holothuroidea

C. Asteroidea

D. Crinoidea

Explanation: