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What is the excretory organ in earthworm known as?

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in Biology – Class 11 by (272k points)
What is the excretory organ in earthworm known as?

(a) Gizzard

(b) Typhlosole

(c) Nephridium

(d) Setae

This question was posed to me in an interview for job.

This key question is from Animals Structural Organisations topic in chapter Structural Organisations in Animals of Biology – Class 11

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Right choice is (c) Nephridium

To explain I would say: Nephridium is the excretory organ in earthworm. Nephridia occur as coiled tubules arranged segmentally. Typhlosole and gizzard are involved in digestion of food while setae help in locomotion.

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