Q. 24.3( 9 Votes )
Availability of water and minerals in the soil for maximum absorption by roots is in the –
D. Surface of soil
The A-horizon layer of the soil is soft, porous and retains water. The roots of small plants are grow in this layer. This layer is also called topsoil.
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In addition to the rock particles, the soil contains
(i) air and water
(ii) weather, and plants
(iii) minerals, organic matter, air and water
(iv) water, air, and plantsNCERT Science
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.NCERT - Exemplar Science
Locate the following zones given as boxed items in Figure 9.1 which shows a diagram of soil profile.
Top soil, Subsoil, C-horizon, Bedrock
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Availability of water and minerals in the soil for maximum absorption by roots is in the –NCERT - Exemplar Science
Which of the following situations – ‘A’ or ‘B’ – is advantageous for absorption of water and minerals? Why?
Situation ‘A’ : Growth and branching of roots in the C-horizon. Situation ‘B’ : Growth and branching of roots in A and B horizons.NCERT - Exemplar Science
Explain how soil is formed.NCERT Science