Availability of water and minerals in the soil for maximum absorption by roots is in the –
A. B-horizon

B. C-horizon

C. A-horizon

D. Surface of soil

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 plants

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.

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

Availability of water and minerals in the soil for maximum absorption by roots is in the –

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.

Sketch the cross section of soil and label the various layers.

Explain how soil is formed.