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In earthworm, the gizzard is found in
A. eighth to tenth segment
B. eighth segment
C. twenty-seventh segment
D. eighth to eleventh segment

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Last updated date: 13th Jun 2024
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Answer
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Hint: The gizzard uses the stones that the earthworm eats to grind the food completely. The food moves into the intestines as a gland cell in the intestine releases the fluids to aid in the digestive process. The intestinal wall contains the blood vessels, it is the place where the digested food is absorbed and after from there transported to the rest of the body.

Complete answer: The digestive system of earthworms is partitioned into many regions, each with a certain function. The earthworm consists of the pharynx, the esophagus, the crop, the intestine, and the gizzard in its digestive system. The food such as soil enters the earthworm’s mouth where it is swallowed by the pharynx. The soil then passes through the oesophagus which contains the calciferous gland that is responsible for the release of the calcium carbonate to get rid of the earthworm’s body of excess calcium. After it passes through the oesophagus, the food moves into the crop where it is stored and then eventually moves into the gizzard. In the eighth segment, the esophagus expands and modifies into a large, distinct, muscular organ, called the gizzard.
Therefore, the correct answer is option B.

Note: The oesophagus is followed by the gizzard. The gizzard is a prominent oval also hard, thick-walled, and highly muscular organ present in the eighth segment. It has the thick wall of the circular muscles lined by the columnar cells which are further lined by the cuticle. The gizzard grinds the food into a fine state.