Invertebrates Classification
Some invertebrate phyla are:
Phylum Protozoa
Phylum Porifera (Sponges)
Phylum Cnidaria (Coelentrata)
Phylum Ctenophora :
Phylum Platyhelminthes
Phylum Aschelminthes (Nematoda)
Phylum Annelida (Segmented worms)
Phylum Arthropoda
Phylum Mollusca
Phylum Echinodermata
Phylum Protozoa
- Members of this phylum are commonly known as sponges.
- Habitat - They are mostly marine, few are found in fresh water.
- Body symmetry - mostly are assymetrical animals, no definite shape to the body.
- Level of organization - These are primitive animals, multicellular with cellular grade of organization.
- Digestion - Digestion is intracellular.
- Reproduction- Reproduction of both means sexually as well as asexual.
- Asexually by mean of binary fission,by budding etc.
- Sexually by mean of conjugation.
- Examples- Paramecium,Amoeba,plasmodium etc.
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