Result Questions for Earthworm Dissection 1.) What are the major organ systems that you were able to find in your earthworm?

In an earthworm dissection, the major organ systems that can be identified include:<br /><br />1. **Digestive System**: This includes the mouth, pharynx, esophagus, crop, gizzard, intestine, and anus.<br />2. **Circulatory System**: Earthworms have a closed circulatory system with dorsal and ventral blood vessels and aortic arches (often referred to as "hearts").<br />3. **Nervous System**: This consists of the cerebral ganglion (brain), ventral nerve cord, and segmental ganglia.<br />4. **Excretory System**: Composed of nephridia, which are responsible for excreting waste.<br />5. **Reproductive System**: Includes seminal vesicles, seminal receptacles, and clitellum, which are involved in reproduction.<br /><br />These systems work together to support the earthworm's life processes.