A) 9th segment
B) 18th segment
C) 13th segment
D) 16th segment
Correct Answer: A
Solution :
Gizzard is a muscular compartment of the alimentary canal that is specialized for breaking up of food. In earthworm, it is the main grinding organ of alimentary canal and occupies most of the part of 9th segment. Its wall is very thick and hard due to a very thick circular muscle layer. Internally, it is lined by the cuticle.
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