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Earthworm Dissection Guide

Learn about the characteristics, anatomy, and classification of segmented worms like earthworms, leeches, and clam worms. Explore their external and internal anatomy, reproductive system, respiration, circulatory system, and digestive system.

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Earthworm Dissection Guide

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  1. Earthworm Dissection Guide

  2. Characteristics • Segmented worms • Include Earthworms, Leeches, clam worm • Classification: Domain-EukaryaKingdom: Animalia • Phylum: Annelida

  3. Classification • Is in the domain Eukarya because they contain • Kingdom Animalia because they are • Phylum because they are

  4. External Anatomy

  5. Cocoon (produced from the clitellum) • Approx. 20 Earthworms are in each cocoon • Only 2-4 survive

  6. Internal Anatomy:Reproductive System

  7. Earthworm Respiration • Breath through their skin • Must remain moist • Move to the surface during rainstorms to prevent drowning • Take in O2 and release CO2 during cellular respiration – to make ATP (energy)

  8. Internal Anatomy: Circulatory System * Closed Circulatory system (blood carried in vessels) *Five Aortic Arches or pumps

  9. Digestive System Extracellular digestion Within digestive tube

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