INDIAN GEOGRAPHY

SOILS AND NATURAL VEGETATION

SOILS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?
A
sand
B
silt
C
clay
D
humus
Explanation: 

Detailed explanation-1: -Humus is dark, organic material that forms in soil when plant and animal matter decays.

Detailed explanation-2: -The uppermost layer of the soil is called topsoil and this layer contains humus, plant roots, and living creatures. The more humus found in topsoil, the more nutrient rich the topsoil and the better the conditions for growing plants.

Detailed explanation-3: -Humification Process in Soil Soil formation takes place by weathering of rocks, humification of plant remains and laterisation. In the process of humification, humus is produced by the decomposition of plant twigs, wood, etc. Humification affects soil quality, its colour and texture.

Detailed explanation-4: -Strictly speaking, compost and humus are two terms that mean different things. When the organic matter has almost completely decomposed, it becomes a stable material called humus. But waste materials that are still actively decomposing are called compost.

Detailed explanation-5: -The decay of dead plants and animals by microorganisms is called . Q. Humus, a soil-enricher, is formed halfway in the process of decay of plants and animals.

There is 1 question to complete.