Question

classification of porifera

Answer 1

The characteristics of phylum porifera are:-
1.The animals show the presence of minute pores on the surface.
2.the water enters through ostia and is expelled through a large osculum.
3.a large body cavity called sopngocoel is present.
4.skeleton is in the form of spicules made up of calcium carbonate.
5.asexual reproduction is by budding and regeneration. eg.sycon.
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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: