Mollusks have all of the following except
A)visceral mass covered with a soft epithelium.
B)folds enclosing a cavity between themselves and the visceral mass.
C)gills or lungs within the mantle.
D)individuals secrete a tiny chitinous chamber,zoecium.
E)the shell consists of a horny outer layer,which is rich in protein.

Question

Quizplus · Accepted Answer

Mollusks do not secrete a tiny chitinous chamber called a zoecium. This characteristic is found in some species of bryozoans, which are not mollusks.

Mollusks Have All of the Following Except