Question

phylum porifera
phylum porifera includes sponges that lacks true tissues. however, they do have specialized cells.
choanocytes are flagellated filtration cells that help sweep water into the sponge. amoebocytes support spongin, which are the skeletal fibers.
sponges are very simple. they contain pores, where water enters the body and exits the body. these animals do not move, so they collect food particles from the water as it passes through the body canals, this categorizes them as suspension feeders.
in reference to the phylum porifera, what is suspension feeding?
collecting food particles from the water as it passes through the body canals
having an organ that suspends out of the body and feeds on nearby organisms
moving through the water to digest food that is decomposing on the ocean floor

Explanation:

The text states that sponges in Phylum Porifera are suspension - feeders and defines it as collecting food particles from water as it passes through body canals.

Answer:

collecting food particles from the water as it passes through the body canals