Digging through Earthworms

Jiakai Pan Earthworm Dissection Pre-AP Biology Vu Period 1

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Annelida Lumbricina

Earthworms are tube-shaped, segmented, and long animals that can be found living in soil. They belong to the kingdom Animalia, under the phylum Annelida. Earthworms are indigenous to Europe, but they are can now be found almost anywhere in North America and Western Asia.
To intake nutrients, earthworms consume soil, extracting nutrients from decomposing organic material, such as leaves and roots. Earthworms are vital to the health and fertility of the soil because they transport nutrients and minerals from below to the surface, through their waste.

Today's Objectives

Students will be learning about the organs, functions, and structures of the digestive system of an earthworm. In addition, students will be learning about the ecological role of the earthworm.

Evolutionary Relationships of an Earthworm

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Earthworms are generally considered good animals that help the soil and are labeled as a gardener's best friend. But recently, earthworms are invading the earth, setting foot on almost every continent.

Earthworm Dissection Tutorial

Earthworm Dissection Lab

The Digestive System At A Glance

Earthworms have a digestive system that contains a mouth, an esophagus, a crop, a gizzard, a pharynx, an intestine, a typhlosole, and a buccal cavity. The function of the digestive system is to ingest food, digest food, and absorb nutrients from the food.