Question

The characteristics of Porifera include the following except:

• A. They are non motile and attached to some solid support
• B. They have holes or pores all over the body for circulation
• C. Covered with hard outside layer or skeleton
• D. Body design involves maximum differentiation

Answer 1

The correct option is D

Body design involves maximum differentiation

The word Porifera means organisms with holes. They are non-motile attached to some solid support. They have holes or pores all over the body for circulation. They are covered with a hard outside layer or exoskeleton and have a body design that involves minimum differentiation.

eg: Sycon and bathsponge.