Feeding: Have a pharynx in head region, it extends out through the mouth for feeding. Earthworms eat soil and dead decaying matter they are detrivores. For digestion they have mouth, pharynx, esophagus,crop,gizzard, intestine and lastly anus.
Respiration: Earthworms rely on diffusion through the skin, however the skin has to be moist for diffusion in earthworms
Internal Transport: Earthworms have a closed circulatory system. Ring vessels supply blood through two blood vessels, one dorsal and one ventral. They also have a digestive tract system
Excretion: Passes through digestive tract and then excreted through the anus. Liquid and gas wastes are gotten rid by a small tube structure which is called nephridia.
Response: Small brain connected to large ventral nerve cord that runs whole length of body, they do not have eye spots. Sensitive to touch and temperature
Movement: Earthworms are adapted to the ground underground and to burrow through soil. Body is divided in segments that help to grip to soil as moving. Move using two muscles, longitudinal and circular, when these muscles contract the earth worm stretches it becomes longer and skinnier and moves.
Reproduction: Earthworms can be hermaphroditic, some have separate sexes. They reproduce sexually, they mate together and fertilize each others eggs. A tube of mucous makes an egg case which slips off the worms body. Hatch onto soil.