An Elaboration on Earthworms
Circulation made Simple
An Ornate Overview
The Oncoming Objective
Earthworms are born in cocoons smaller than a grain of rice that are laid on the ground surface. Hatchlings burrow down into the ground where they grow and mature into adult earthworms. Earthworms live up to six years.
Earthworms live underground during the day and surface during nighttime, when they are more hidden from predators. Earthworms are able to burrow up to 2 meters (6.5 feet) underground.
Earthworms are eaten by many animals including rats, birds, toads, snakes, and turtles.
In this picture, one can see the pharynx, which leads to the esophagus, which leads to the crop, which leads to the gizzard, which leads to the intestine. This is the path food takes to be digested by the earthworm. One can also see the lateral hearts that circulate the esophagus.
One can see the protosmium, which are like lips for the earthworm. One can see most of the sexual organs like the seminal vesicles, the testes, and the ovary. The brain circulates the mouth.
(Not from dissection) In this picture, one can see the exterior organs, such as the clitellum, a sexual organ, the setae, which aid in tunneling, the mouth, where food goes, and the anus, where waste exits the body.
Revolutionary Evolutionary Relationships
Handy Human Impact
Feasibly Fun Facts
- If a worm is cut in half, two will not grow, but they can replace lost segments.
- Earthworms are hermaphroditic- they have both male and female reproductive parts.
- The largest earthworm found was 22 feet long.
- Earthworms have no eyes, but can sense the presence of light.
- Earthworms are native to Europe.
- In one acre of land, there can be more than a million earthworms.
- Earthworms become paralyzed after an hour of sunlight.
- Earthworms eat their weight in food every day.
- The mucus on earthworms contains nitrogen which is good for plants.
- Charles Darwin spent 39 years studying earthworms.
Wonderful Works Cited
"Common Earthworm." Common Earthworm. National Geographic, n.d. Web. 08 Apr. 2014.
"Earthworms." Wikipedia. Wikimedia Foundation, 14 Jan. 2014. Web. 09 Apr. 2014.
"Worm Facts." Worm Facts. Illinois University, n.d. Web. 09 Apr. 2014
Earthworm. Digital image. Earthworm Ecology. Earthworm Society of Britain, n.d. Web. 9 Apr. 2014.
Earthworm in dirt. Digital image. Decomposers. St. John Fisher College, n.d. Web. 9 Apr. 2014.
Earthworm Jim. Digital image. Earthworm Jim. Giant Bomb, n.d. Web. 9 Apr. 2014
Evolutionary Relationships. Digital image. Flatworms, Mollusks, and Annelids. Clinton Community College, n.d. Web. 9 Apr. 2014.
Kalman, Bobbie. Earthworm Life Cycle. Digital image. Story: Earthworms. TEARA, 2004. Web. 9 Apr. 2014.
MSN. Earthworm. Digital image. Worms. NBC, n.d. Web. 9 Apr. 2014.
Yale University. Earthworm Phylogeny. Digital image. Tree of Life. Peabody Museum of Natural Science, n.d. Web. 9 Apr. 2014.
Dial, Ken. Circulation Worm. N.p.: Vimeo, 2013. Video