Question

Explain Phylum Porifera in detail.

Answer 1

Characteristic Features of Phylum Porifera are:

They are generally marine aquatic organisms, with a few freshwater species. Their bodies are asymmetrical. Body shape can be cylindrical, vase-like, rounded or sac-like. They are diploblastic animals with two layers, the outer dermal layer and the inner gastral layer.

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Answer 2

Phylum Porifera:-

• All the sponges belong to this phylum .
• Sponges are aquatic animals which remain fixed to the bottom of the sea or some objects.They are called sessile.
• Sponges are hermaphrodites.
• Examples-Hyalonema and Sycon.
• In the above attachment you can see an examples of sponges .