Question

Which among the following belongs to Porifera?

• 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 A They are non motile and attached to some solid support

The word Porifera means organisms with pores. They are non-motile and is attached to some solid support. They have holes or pores all over the body for circulation. They have a hard exoskeleton, which provides rigidity. They are the least developed of all animal phyla, and hence have a body design that involves minimum differentiation.