- In the classification system Linnaeus and R h Whittaker gives their full potential for classify all organisms
- Linnaeus classify organisms till plants and animals .He does not distinguish between eukaryotes and prokaryotes, unicellular and multicellular organisms,
- Photosynthetic green(algae) and non photosynthetic (fungi)
R H Whittaker proposed five kingdom of classification
Which are as follows
- Kingdom Monera
- Kingdom Protista
- Kingdom Fungi
- Kingdom Plnatae
- Kingdom Animalia
Kingdom animalia includes 11 phylum's
- Phylum porifera
- Phylum coelenterata
- Phylum ctenophora
- Phylum platyhelminthes
- Phylum ashelminthes
- Phylum annelida
- Phylum arthropoda
- Phylum mollusca
- Phylum echinodermata
- Phylum hemichordata
- Phylum chordata
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
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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