Which of These Animals Uses Collar Cells to Obtain Food

Question

Which of these animals uses collar cells to obtain food for intracellular digestion?
A) Sponges
B) Earthworms
C) Hydra
D) Humans
E) Protists

Accepted Answer

Sponges use collar cells, also known as choanocytes, to trap and digest food particles through intracellular digestion.