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  • In earthworm, the dorsal wall of the intestine from the 26 to 35th segment forms a median internal fold called  Option: 1 Trochophore<

In earthworm, the dorsal wall of the intestine from the 26 to 35th segment forms a median internal fold called

 

Option: 1

Trochophore

 


Option: 2

Clitellum

 


Option: 3

Trachea

 


Option: 4

Typhlosole


Answers (1)

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 Alimentary Canal of Earthworm

  • The alimentary canal is a straight tube that runs between the first segment to the last segment of the body of an earthworm.
  • At segment 26, a pair of intestinal caecae project from the intestine.
  • From segments 26 to 35, the intestine shows a characteristic feature called typhlosole.
  • Typhlosole is the internal medial folds of the dorsal wall. 
  • Typhlosole increases the effective area of absorption in the intestine.
  • The alimentary canal opens into the anus which is a round small aperture.
  • During digestion, the ingested soil is passed through the digestive tract and is digested into small absorbable substances which are absorbed through the membranes of the intestine.

 

- From segments 26 to 35, the intestine shows a characteristic feature called typhlosole

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Rakesh

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