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  4. The earthworms, insects and snails are

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Q. The earthworms, insects and snails are

EAMCETEAMCET 2000

Solution:

When mouth arises from blastopore and cleavage is spiral and determinate. This condition is called protostomia and the animal having this condition are called protostomes. The animal of phylum Protozoato phylum Mollusca are protostomes. Thus. earthworm, insects and snails are protostomes.