5.1: Porifera
5.2: Coelenterata
5.3: Platyhelminthes
5.4: Aschelminthes
5.5: Arthropoda
- Phylum Arthropoda
- More on Phylum Arthropoda
- Classification of Arthropods
- Metamorphosis
- Some Insects being the Vectors of Diseases
- Echinodermata, Star Fish, Sea Urchin
- More on Phylum Echinodermata
- Phylum Hemichordata
- Criteria for Animal Classification
- Grade Radiata, Bilateria
- Diploblastic and Triploblastic Organization
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