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d) Mulching

Q6. What is the breaking up and decay of exposed rocks, by temperature changes, frost action,

plants, animals, and man, known as?
a) weathering

b) recycling
c) feathering

d) articulating

Q7. Soil that is rich in nutrients is fertile, and the right mix of _______ makes the soil fertile.

a) minerals and organic matter
b) water and bacteria

c) sand and coal

d) rocks and mud

Q8. What is the role of parent rock in soil formation?
a) It determines the colour, texture, chemical properties, mineral content, and permeability of the

soil.

b) It influences the rate of the weathering of the soil.
c) It affects the rate at which humus forms in the soil.

d) It determines the thickness of the soil.

Q9. What does subsoil contain?

a) sand, silt, and clay
b) humus and vegetation

c) weathered rock material

d) parent rock

Q10.Regur is the local name for ________type of soil in India?
a) Mountain

b) Black

c) Red
d) Laterite

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