Phylum Annelida Introduction || Characteristics and Classification || Some Important Annelida

Phylum platyhelminthes Introduction || Characteristics and Classification

Phylum Mollusca Introduction || General Characteristics and Classification

Phylum chordata Introduction || Characteristic Features and Classification

Phylum Echinodermata Introduction || General Characteristics and Classification

Phylum Arthropoda Introduction || General Characteristics

Phylum Aschelminthes (Nemathelminthes) Introduction || General Characteristics and Classification

Phylum annelida includes over

Phylum Coelenterata Classification || Phylum Ctenophora Introduction ||General Characters and Classification

Phylum-Annelida includes invertebrates which have

The unique characteristic of annelida is