1. Tardigrade
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  3. Biology
  4. In earthworm, the circular muscles are highly develop in:

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Q. In earthworm, the circular muscles are highly develop in:

ManipalManipal 2006

Solution:

Gizzard is present in 8th segment or in 8th and 9th segment. Gizzard is meant for grinding of food and is thus provided with thick circular muscles.