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Phylum porifera

Phylum porifera

It is the first phylum of kingdom Animalia.Members of this phylum are commonly known as sponges

 Examples of porifera are as follows

 1. Sycon (sypha)
2.spongilla(freshwater sponge)
3.Euspongia(Bath sponge)



Features of phylum porifera are given below

 1.They are generally marine

 2.Mostly asymmetrical animals

 3.They have a cellular level of  organisation

 4.Sponges have a water transport or canal system

 5. Digestion is intracellular

 6.The body is supported by Skeleton made up of spicules or spongin fibres

 7.Sexes are not separate (Hermaphrodite)
i.e eggs and sperms are produced by the same individual

 8.Fertilisation is internal and development is indirect having a larval stage

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