Which of the following characteristics is common to all sponges?
A)Adults can be free-swimming or sessile.
B)They show bilateral symmetry.
C)They are suspension feeders.
D)They contain nematocysts.
E)They have a simple gastrovascular cavity.

Question

Quizplus · Accepted Answer

All sponges are suspension feeders, meaning they filter food particles out of the water that they pump through their bodies. The other choices do not apply to all sponges - not all sponges are free-swimming (some are sessile), they do not show bilateral symmetry (most are asymmetrical), they do not contain nematocysts (these are found in cnidarians), and they do not necessarily have a simple gastrovascular cavity (some have no true digestive system).

Which of the Following Characteristics Is Common to All Sponges