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Structural Organisation in Animals
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  1. In contrast to Annelids the Platyhelminths show:
    1. Absence of body cavity
    2. Bilaterial symmetry
    3. Radial symmetry
    4. Presence of pseudocoel
Correct Option: A

Platyhelminthes includes flat warms. There is no body cavity. The animals are therefore acoelomates. Annelids also have bilateral symmetry. They are coelomate having a perivisceral cavity divided into compartments.


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