A Worm That's Not a Bookworm
Earthworms live in moist soil which contains organic matter. In this soil, the earthworms eats decaying substances. They then leave castings that are beneficial for plant growth. This is part of an earthworm's niche in the ecosystem: it leaves excretion useful for plant growth, breaks down organic matter, and provides a natural means of aeration for the soil as they tunnel through it.
The earthworms are often eaten by many birds and are popular with fisherman who use these creatures as bait.
Earthworms and Farming!
- Learn about the internal and external anatomy of an earthworm
- Focus on the digestive system of an earthworm and its organs
Dissection of the Earthworm
The Earthworm Uncut
The earthworm as is-- not dissected just yet!
Well, not just its guts-- all of the earthworm's internal anatomy is shown.
Posing with the Earthworm
My lab partners and I with the earthworm!
Some of the external parts of the earthworm include the following: clitellum, sperm grooves, setae, sperm duct openings, segment, anterior/posterier end, mouth.
Some of the internal parts of the earthworm include the following: heart, male reproductive organ, female reproductive organ, blood vessel, testes, seminal vesicles, esophagus, crop, gizzard, intestine, anus.
The major parts of the earthworm's digestive system are the mouth, pharynx, esophagus, crop, gizzard, intestine, and anus.