Which of these animals uses collar cells to obtain food for intracellular digestion?

Question

Quizplus · Accepted Answer

Sponges are the only animals among the options provided that use collar cells (also known as choanocytes) for intracellular digestion. These cells line the inside of the sponge's central cavity or "spongocoel" and use their flagella to create a current of water that brings in food particles. The collar cells then trap and phagocytose the food, breaking it down for digestion within their own cellular compartments.

Which of These Animals Uses Collar Cells to Obtain Food