Kingdom Animalia Metazoa - Questions & Answers | Exam2Win

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121. A common chamber for all the canals of a sponge is/Cavity present in all sponges is

A. Incurrent canal

B. Paragastric cavit

C. Excurrent canal

D. Radial chamber

Explanation:

122. Which is a special feature of porifera

A. All are marine

B. Calcareous spicules

C. Canal system

D. Division of labour

Explanation:

123. Internal bud for overcoming unfavourable conditions in Spongilla is

A. Budding

B. Regeneration

C. Gemmule

D. Parenchymula

Explanation:

124. Animals floating or swimming in surface film of water are

A. Neuston

B. Nekton

C. Pelagic

D. Seston

Explanation:

125. Which is universal for sponges?

A. Marine

B. Calcareous spicules

C. Radial symmetry

D. High regenerative power

Explanation: