This guide covers the typical 7th-grade biology laboratory work on the external structure and movement of earthworms . It helps you understand how these creatures are adapted to their life in the soil.
To study the external features of the earthworm and observe how it moves and reacts to stimuli. 1. General Classification Phylum: Annelida (Segmented worms). Class: Oligochaeta (Little-ringed worms). 2. External Observations
Laboratory Work: External Structure and Movement of the Earthworm