Question

porifera are symmetry

Answer 1

Only sponges (phylum Porifera) have asymmetrical body plans. Some animals start life with one type of body symmetry, but develop a different type as adults; for example, sea stars are classified as bilaterally symmetrical even though their adult forms are radially symmetrical.

Answer 2

Answer:

Porifera :-

1. Holes are present throughout the body which leads to canal like circulatory system.
2. They are attached to a rigid support and are hence non-motile.
3. They are covered by a hard outside layer or skeleton.
4. Minimal differentiation into tissues.
5. They are generally called sponges are mostly found in marine habitats
6. Ex. Sycon , Spongilla

Explanation: