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Evolution of the animal digestive system

11-grade · Chapter: The phylogeny of the organic world

In this topic

What digestion is for, and its three routes
From protists to roundworms
Annelids and arthropods
Vertebrates: the common plan and its progressive changes

Key terms

Digestion
Digestive enzyme
Phagocytosis
Food vacuole
Gastrovascular cavity
Through gut
Membrane (parietal) digestion
Typhlosole
Hepatopancreas
Villus and microvillus
Heterodont teeth
Symbiotic digestion

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