Question

question 3
10 points
members of this group are almost exclusively filter feeders.
a cnidaria
b mollusca
c platyhelminthes
d porifera
e annelida

Explanation:

Porifera (sponges) are almost exclusively filter - feeders. They draw water through their pores, filter out food particles (such as bacteria and small organic matter), and then expel the water. Cnidaria (e.g., jellyfish, corals) have various feeding mechanisms including capturing prey with tentacles. Mollusca have diverse feeding methods like grazing (snails), filter - feeding (some bivalves but not almost exclusive), or predation (cephalopods). Platyhelminthes (flatworms) can be parasites or free - living predators/decomposers. Annelida (segmented worms) have different feeding habits such as deposit feeding (earthworms) or predation (some marine polychaetes).

Answer:

D. Porifera