Question

The major source of minerals in the soil is the:

• A. Parent rock from which soil is formed
• B. Plants
• C. Animals
• D. Bacteria

Answer 1

The correct option is A

Parent rock from which soil is formed

The correct answer is - Option A: Parent rock from which soil is formed.

Explanation of the correct option:

1. Soil minerals are the most important component of soil.
2. The production of soil minerals is caused by natural erosion and weathering.
3. The parent material can be broken down by water, pressure, temperature change, gravity, wind, and living beings.
4. Hence, the major source of minerals in the soil is the parent rock from which the soil is formed.

Explanation of the wrong options:

Option B) Plants utilize the soil minerals for growth, development, and maintenance. And upon partial decomposition of plants, the humus is formed.

Option C) Dead and decayed animals form the humus present in the soil.

Option D) Bacterias are the living organisms of soil that convert the soil minerals so that these can be utilized by plants for growth, development, and maintenance.

Therefore, The correct answer is - Option A: Parent rock from which soil is formed.