Aschelminthes Nemathelminthes - Questions & Answers | Exam2Win

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116. Body cavity of annelids/Nereis is

A. Schizocoel

B. Enterocoel

C. Pseudocoel

D. None of the above

Explanation:

117. Which is marine

A. Pheretima communissima

B. Eisenia

C. Pontobdella/Nereis

D. Hirudo

Explanation:

118. External segmentation is absent but internal segmentation is present in

A. Polychaeta

B. Oligochaeta

C. Archiannelida

D. Hirudinea

Explanation:

119. Which one exhibits concentric tube-within-tube plan?

A. Arthropoda

B. Oligochaeta/Earthworm

C. Mollusca

D. Echinodermata

Explanation:

120. Name the animal having both setae and nephridia

A. Sea Urchin

B. Sea Mouse

C. Sea Anemone

D. Sea Pen

Explanation: