Why is conservation of topsoil necessary in agriculture?
Answer and explanation
Correct answer: Because topsoil contains more nutrients and organic matter needed for plant growth
Topsoil is the fertile uppermost layer of soil. It contains humus, mineral nutrients and microorganisms that support plant growth and crop production. When erosion removes this layer, soil fertility and water-holding capacity may decrease. Option B is incorrect because topsoil does much more than affect soil colour; its key role is maintaining fertility. Exam tip: associate topsoil with humus, nutrients and soil fertility.
Frequently asked questions
What is the correct answer to this question?
Because topsoil contains more nutrients and organic matter needed for plant growth
Why is this the correct answer?
Topsoil is the fertile uppermost layer of soil. It contains humus, mineral nutrients and microorganisms that support plant growth and crop production. When erosion removes this layer, soil fertility and water-holding capacity may decrease. Option B is incorrect because topsoil does much more than affect soil colour; its key role is maintaining fertility. Exam tip: associate topsoil with humus, nutrients and soil fertility.
Which subject and chapter does this question cover?
This is a Class 11 Home Science question. Chapter: Work, Livelihood and Career. Topic: Traditional occupations in India - Agriculture.
