Question

Why do some mollusks have shells?
A. So they can live both on land and water B. To make it easier to find food C. This as a reason why mollusks have shell
D. To protect their bodies

Answer 1

Answer:

Mollusks often have a hard outer shell to protect their bodies. All mollusks have a thin layer of tissue called a mantle which covers their internal organs. The mantle produces the mollusk's shell. Clams, oysters, snails, and octopuses are all mollusks.