If the digestive tract is open at only one en | vedclass

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(A) In the animal kingdom,digestive systems are classified based on the number of openings. An incomplete digestive system has only a single opening t

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an incomplete digestive tract.

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(A) In the animal kingdom,digestive systems are classified based on the number of openings. An incomplete digestive system has only a single opening to the outside of the body that serves as both the mouth and the anus. This type of digestive tract is characteristic of organisms like $Cnidarians$ and $Platyhelminthes$. In contrast,a complete digestive system has two separate openings,a mouth and an anus.

If the digestive tract is open at only one end,it is called ......... .

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