Question

With the help of diagram, describe the different layers of soil profile

Answer 1

A- Horizon (The Topsoil)- The uppermost layer of soil exposed to air is the topsoil. The topsoil is the most useful part of soil. It is Soft, porous and capable of holding good amount of water.

B-Horizon (The Subsoil) - the sub soil is poor in humus, but rich in minerals.it is rich in soil water and home to many burrowing animals.

C-Horizon (The Substratum) - The substratum includes big pieces of broken-rocks formed as a result of partial weathering of rocks. The substratum may hold water and some minerals.

The Bedrock - the bedrock is hard solid rock layer impervious to water. It may hold water (groundwater) with dissolved minerals. Wells or tube wells are dug to reach the bedrock to draw groundwater collected on it.