Excretion and gas exchange in sponges are accomplished by
A)active transport.
B)diffusion.
C)contractile vacuoles.
D)nephridia.
E)osmosis.

Name: Excretion and gas exchange in sponges are accomplished by A)active transport. B)diffusion. C)contractile vacuoles. D)nephridia. E)osmosis.
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Question

Quizplus · Accepted Answer

Sponges lack specialized organs for excretion and gas exchange. Instead, these functions occur via simple diffusion across the sponge's body surface, as the body wall is thin and permeable.

Excretion and Gas Exchange in Sponges Are Accomplished by