Question

Question 9

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.

Answer 1

Situation 'B' is advantageous for absorption of water and minerals. This is because A-horizon is top layer of soil and is rich in minerals and humus. The plant roots grow in topsoil. The roots of some of the trees are, however, able to reach B-horizon (subsoil). Subsoil is rich in soluble minerals.