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प्रश्न
Read the following statements with reference to soil.
- Weathering is a very fast process of soil formation.
- Percolation of water is faster in sandy soils.
- Loamy soil contains only sand and clay.
- Top soil contains the maximum amount of humus.
Choose the correct statements from the above.
विकल्प
(ii) and (iv)
(i) and (iii)
(ii) and (iii)
(i) and (ii)
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उत्तर
(ii) and (iv)
Explanation:
Weathering is the breaking down of huge pieces of rocks into smaller pieces by the action of natural forces such as water, glaciers, wind and roots of plants, etc. It takes hundreds of years to produce a few centimetres of soil. So, it is a very slow process. Loamy soil is a mixture of sand, silt and clay and also has humus in it.
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संबंधित प्रश्न
Distinguish between the following pair
Soil erosion and soil conservation
Give geographical reason:
Soil is a very important resource.
Name any four agents of erosion.
Why is soil conservation important? Give three reasons.
Unscramble the following jumbled word related to soil.
\[\boxed{\text{I}}\]\[\boxed{\text{L}}\]\[\boxed{\text{O}}\]\[\boxed{\text{S}}\] \[\boxed{\text{F}}\]\[\boxed{\text{I}}\]\[\boxed{\text{P}}\]\[\boxed{\text{R}}\]\[\boxed{\text{O}}\]\[\boxed{\text{L}}\]\[\boxed{\text{E}}\]
Unscramble the following jumbled word related to soil.
\[\boxed{\text{M}}\]\[\boxed{\text{O}}\]\[\boxed{\text{A}}\]\[\boxed{\text{L}}\]
Unscramble the following jumbled word related to soil.
\[\boxed{\text{G}}\]\[\boxed{\text{I}}\]\[\boxed{\text{N}}\]\[\boxed{\text{R}}\]\[\boxed{\text{H}}\]\[\boxed{\text{E}}\]\[\boxed{\text{T}}\]\[\boxed{\text{W}}\]\[\boxed{\text{E}}\]\[\boxed{\text{A}}\]
A man digging a pit found that he could dig with ease initially but digging became difficult as he went deeper. He could not dig beyond a depth of 5 feet. Provide a suitable scientific explanation.
Rajasthan is a desert state in India. Once while travelling to Rajasthan by train, Boojho observed several streams and rivulets of rain water during the journey but to his surprise, he did not see streams of water in the desert region even during rains. Help Boojho find a suitable explanation for this.
Match the animals in Column I with their natural place of dwelling (habitat) in Column II.
| Column I | Column II | ||
| (a) | Earthworm | (i) | Sand and beaches |
| (b) | Garden lizard | (ii) | Burrows in soil |
| (c) | Crab | (iii) | Deep, narrow holes in dry soils |
| (d) | Rodents | (iv) | Surface of soil |
| (e) | Scorpion | (v) | The surface of shaded moist soils |
| (f) | Snails and slugs | (vi) | A horizon of moist soils |
