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please tell about the alimentary canal of an earth worm


The alimentary canal


Prostomium: Tastes and grips the food.
Pharynx: Pulls the food into the alimentary canal.
Oesophagus: Passes the food into the crop.
Crop: Stores and softens the food.
Gizzard: Mechanical digestion of food using pebbles and pieces of grit.
Intestine: Enzymes are released to chemically breakdown the food and the soluble pieces areabsorbed. There is an infolding on the dorsal side of the wall of the intestine which increases the surface area for absorption of food. This is called the typhlosole.
Anus: The undigested food and soil is egested through the anus as 'worm casts'.


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