Earthworm Dissection

and digestive system

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Earthworm (Lumbricus terrestris)

Earthworms generally live in soil. Earthworms play a major role in the conversion of large pieces of organic matter into rich humus, improving soil fertility. They are eaten by birds, moles, ants, scorpions, and other various large insects.

Taxonomy and Evolution

  • Kingdom - Animalia
  • Phylum - Annelida
  • Class - Oligochaeta
  • Order - Megadrilacea

Earthworms are decomposers so they feed on dead organic matter and excrete into the soil, making it richer. They have a double transport system composed of coelomic fluid. They also have a closed circulatory system.

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Digestive System