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Class 9th diversity notes with NCERT text book questions
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Basis of classification ( 10 main phyla) Name Basis of classification 1. Phylum Protozoa . Locomotory organs 2. Phylum Porifera . Spicules ( endoskeleton) 3. Phylum Colenterata . Polymorphism 4. Phylum Platyhelminthes . Habit & Habitat 5. Phylum Aschelminthes . Habit & Habitat 6. Mollusca Gills,Shell,foot,Nervous sys . 7. Phylum Annelida . Locomotory organs 8. Arthropoda Body appendages & no of legs 9. Echinodermata . Position of mouth,anus arms 10. Chordata . Notochord, cranium,jaws Basis of classification ...