A sponge actually feeds by
A) actively capturing their prey with stinging cells.
B) drawing water in and out through the osculum.
C) producing water currents that flow through the pores into the central cavity and out through the osculum.
D) producing water currents that flow through the osculum into the pores and out through the central cavity.
E) photosynthesis.

Question

Quizplus · Accepted Answer

Sponges are filter feeders and they feed by producing water currents that flow through the pores into the central cavity and out through the osculum. As water flows through the sponge, tiny organisms and dissolved nutrients are trapped by the sponge's collar cells, or choanocytes, and then digested.

A Sponge Actually Feeds by