Diagram Of Earthworm

They occur worldwide and are commonly found in soil eating live and dead organic matter. You can found earthworm anywhere in the world. The buccal cavity is made up of 2 segments that is thin walled and shaped like a pear.
diagram of earthworm

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Let us understand the working of the digestive system of an earthworm.

Diagram of earthworm. The body is divided into linear row of 100 to 120 similar segments or metameres. The general colour of the body is brown but the dorsal surface is darker. Esophagus carries food from pharynx to crop 7. An earthworm is a tubular segmented worm of the phylum annelida.

They are the common inhabitants of moist soil and feed on organic matter. An earthworm is a segmented worm. Pharynx throat passes food from mouth to esophagus 4. 5 th 7 th.

2 nd 3 rd segment or middle of 3 rd segment. There are no jaws and teeth and the earthworm sucks in the soil containing food with. The body of pheretima is nearly circular in cross section and varies from 7 to 8 inches 18 19 cms in length. Earthworms are commonly called as farmers friend.

Earthworm dissection diagram 1. A dark line extends from end to end in the mid dorsal line. Digestive system of earthworm. Ventral lood vessel major blood vessel on belly side 6.

It respirates through its skin and digestive system is measured from its length. An earthworm is a tube shaped worm found in soil. Segments of ody rings around body body is segmented 3. Alimentary canal is long and straightextending from mouth to anus.

In this article we will discuss about the external and internal anatomy of earthworm. External anatomy of earthworm. Digestive system of earthworm consists of alimentary canal and glands along with physiology of digestion. 3 rd 4 th segment.

An earthworms digestive system runs the length of its body. The prostomium or mouth of an earthworm is made up of strong lips. It respires through its skin. Litellum forms slime.

Mouth takes in food from soil 2. It consists of following parts. The earthworm is hermaphrodite fig25 ie both male and female reproductive organs are present in the same individual. This will also help you to draw the structure and diagram of earthworm.

This is because the worm casting faecal deposit increases the fertility and burrowing helps in proper aeration of the soil. To detach the gut from the body wall starting from about 30th segment cut the gut hold the cut end with a pair of forceps in. Cut open the skin and expose organs from about 30th segment to the anterior end of the worm. The earthworms digestive system is one of the most important system in the worm.

A terrestrial invertebrate belonging to the phylum annelida. As a bonus site members have access to a banner ad free version of the site with print friendly pages. Label earthworm external anatomy diagram printout. Ventral nerve ord like our spinal cord carries nerve impulses 5.

Earthworm have long cylindrical body which is slightly pointed in front and blunt behind.