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Assertion (A): The digestive system in Platyhelminthes is complete. Reason (R): The digestive system in Platyhelminthes has a single opening to the outside of the body that serves as both mouth and anus Regarding (A) and (R) :

( a ) Both A and R are correct but R is not the correct explanation for A
( b ) A is incorrect but R is correct
( c ) A is correct but R is incorrect
( d ) Both A and R are correct & R is the correct explanation for A
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(B) is the right answer.

In animals: the digestive system in Platyhelminthes has only a single opening to the outside of the body that serves as both mouth and anus, and is hence called incomplete. A complete digestive system has two openings, mouth and anus.
answered Jan 3, 2014 by pady_1
 

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