The highly degraded organic matter rich in nitrogen and potassium in particular, resulting from the activity of earthworms is known as .......... which can be used as manure.

Worm castings

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Vermicompost

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Compost bedding

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Humus

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Solution

The correct option is B Vermicompost
Earthworms are traditionally called as friends of farmers because they increase aeration and make available nitrogen and potassium to plants in easily usable form. The dead and decaying materials contain certain complex molecules which are churned and broken down into simpler one and is excreted as humus. The process is known as vermicomposting.
So, the correct answer is option B.

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Similar questions

Assertion (A): Earthworms are referred as ‘Farmer’s friend’.
Reason (R): After digesting organic matter, earthworms excrete a nutrient- rich waste product called castings that directly influence healthy plant growth.

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Q. Use of earthworms for the decomposition of organic matter is called ________.

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