An earthworm is a tube-shaped, segmented worm found in the phylum Annelida. Earthworms .... The earthworm's nervous system has three parts: the central nervous system (CNS), peripheral nervous system and the sympathetic nervous ...
After organic matter is digested, the earthworm releases waste from their bodies called ... The segmented body parts provide important structural functions.
Answer key to the dissection of the earthworm, includes labeled images and answers to analysis questions.
Apr 25, 2010 ... Since earthworms eat dirt, the sand grains grind against the food tearing it into smaller and smaller parts. Glands in the walls of the gizzard add ...
Earthworms are the most highly developed worms. They are divided into segments or parts. They are found in salt and fresh water as well as in the soil.
clitellum - the enlarged part of the earthworm that contains the reproductive parts; it produces the eggs. The clitellum is about one third of the way down the body ...
In this lab, you will dissect an earthworm in order to observe the external and ... Use a hand lens as you observe all parts of the worm, externally and internally.
Internal anatomy of an earthworm (lateral section): small, long, cylindrical animal without legs or hard body parts.