Which statement about gastrovascular cavities is true?

Question

Quizplus · Accepted Answer

Gastrovascular cavities are found in cnidarians such as jellyfish and hydra. These cavities have a single opening that functions as both the mouth and anus. Enzymes secreted into the cavity partially digest the prey, and then extracellular digestion completes the breakdown of food particles.

(A) is false as gastrovascular cavities are also found in cnidarians. (C) is partially correct, but it is important to note that there is only one opening in the gastrovascular cavity. (D) is false as extracellular digestion only partially digests the food particles. (E) is false as sponges do not have a gastrovascular cavity.

Which Statement About Gastrovascular Cavities Is True