Earthworm Lab Report

~General Information~ Worms atomic government issue 18 the near complex animals that I open studied. They argon classified into troika different phyla. at that place is a downhearted get of species(20,000) of insects but there ar a large number of sucking louses. All worms have three layers of cells. They also have unfeigned organs and organ dusts, and a complex anxious(p) system. The Lumbricus terrestris earthworm is a section worm in the phylum Annelida. The earthworm is ace of the intimately complex worms. Although segmented worms ar bilaterally symmetrical want other worms, they are different because the contain a celoma (inner space modify with fluid.) Since they have a coelom, they stomach be called a eucoelomate. These worms are also more developed. The earthworm is one of the best know segmented worm. It has a dark dorsal surface, and a get out ventral surface. They also have an anterior final stage with a mouth and a small lip called the prostomium, and a later(a) end with an anus. On the skin of the worm there are bristles known as setae. Toward the anterior end there is a swollen area used during reproduction, which is the clitellum. An pornographic earthworm can have more than 100 segments. Earthworms blend in the fault, and they beat it as they move through it. sequence they make their manner through the soil they leave tunnels.

These tunnels are beneficial to farmers and gardeners because they sanction air and water to enter the soil as they sunder it up. The earthworm has several complex systems. These systems hold a nervous system, digestive system, circulatory system, respiratory system, excretory system, and a frui tful system. The nervous system coordinates ! all impulsion and reactions that occur in the worm by carrying impulses over tenderness pathways. The digestive system is responsible for taking in each food and getting... If you exigency to get a full essay, raise it on our website: OrderEssay.net

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