A Sponge Feeds by

question 30

Multiple Choice

A sponge feeds by

• A)using a net and a current that sweeps food particles through it.
• B)squeezing the spongocoel cavity to suck debris in and out through the osculum.
• C)beating the flagella of collar cells to form a current;food is absorbed by collar cells.
• D)beating the flagella of collar cells to form a current from osculum to pores;food is engulfed by amoebocytes in the central cavity of the sponge.Beating of flagella of collar cells creates water currents that circulate water through the body of a sponge.Water currents bring microscopic food particles into the canal system of a sponge.Food particles are filtered by collar cells.

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Definitions:

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