Earthworm Dissection

By Harry Katz Vu-PAPBIO-3


The objective is to observe and learn about the external and internal structure of the earthworm.

Background Information

scientific name- Lumbricus terrestris

habitat- Most earthworms live in soil.

predators- Predators of the eartworm include snakes, birds, rodents and some insects.

prey- Earthworms eat on the remains of dead plants and animals.

niche- Earthworms break down organic matter and aerate the soil.

Circulatory System

An earthworm has a closed circulatory system. An earthworm has three main blood vessels. These vessels are the aortic arches, the dorsal blood vessel and the ventral blood vessel. The aortic arches function as the earthworms heart. The dorsal blood vessel carries blood to the front of the earthworm, while the ventral blood vessel carries blood to the back of the earthworm.
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Extra Information

Interesting facts

-Earthworms play a major role in in enriching and improving soil.

-Earthworms do not have lungs, instead they use their skin to breath.

-An earthworm cannot hear or see.

-Earthworms have had a major impact on humans.



Phylum: Annelida

Class: Oligochaeta

Order: Haplotaxida

Suborder: Lumbricina