Question

Write the two distinction feature of phylum porifera

Answer 1

Answer:

Characteristic Features of Phylum Porifera

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. There is a gelatinous, non-cellular mesoglea, in between these two layers.

Answer 2

Answer:

1. Canal System or Water transport system

• Water enters these organisms body through ostia's ( minute hole's in their body) and is expelled out through ostium.

2. All poriferans are marine forms except for Spongilla which can be found on fresh water.

Explanation:

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