In earthworm, skeleton like function is performed by
A
Coelomic fluid
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B
Alimentary canal filled with food
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C
Typhlosole
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D
None of the above
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Solution
The correct option is A Coelomic fluid The earthworm consists of a true coelom which is present between the body wall and alimentary canal. Coelomic fluid is present in the coelom that acts as a hydraulic skeleton. It is helpful in contraction and relaxation of the muscles in the earthworm's body. Alimentary canal aids in digestion. Typhlosole is present in the digestive system of an earthworm and enhances the surface for digestion and absorption of food. So, the correct answer is option A.