On the basis of which of the following features the sponges can be differentiated from the coelenterates?
A
Acoelomates
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B
Asexual reproduction by budding
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C
Diploblastic body wall
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D
Canal system
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Solution
The correct option is D Canal system Sponges can be differentiated from the coelenterates in having canal system.
As Canal system is absent in coelenterates but in sponges canal system is present that helps in excretion, respiratory gas exchange and also helps in food acquisition.