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Platyhelminthes

All flatworms...

Question

All flatworms differ from all roundworms in having:

A

Triploblastic body organization

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B

Flat body structure

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C

Absence of coelom or body cavity

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D

Both B and C

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Solution

The correct option is A Both B and C
Flatworms have flattened bodies dorsoventrally. Roundworms are cylindrical rather than flattened. Flatworms do not possess coelom whereas roundworms possess pseudocoelom.
Both flatworms and roundworms are triploblastic.
So, the correct answer is option D.

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