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Q. Which one of the following is not a characteristic of phylum Annelida?

AIPMTAIPMT 2008Animal Kingdom

Solution:

Phylum annelida comprises invertebrates, which are segmented worms having cylindrical soft bodies showing metameric segmentation. These are triploblastic animals showing bilateral symmetry. A true coelom is present which is filled with coelomic fluid containing cells. Annelids are perhaps the first animals to have a true schizocoelic coelom.