Question

Humus is good for plant growth because ________________.

• A. It makes the soil porous.
• B. It increases water holding and aeration of soil.
• C. It improves physical condition of soil.
  
• D. It is rich in nutrients.

Answer 1

Answer: (A), (D)

It makes the soil porous.
It is rich in nutrients.

Humus is good for plant growth because it is formed by the decay of living organisms and is rich in nutrients. Humus is a major factor in determining the soil structure because it causes the soil to become more porous and allows water and air to penetrate deep underground.

Thus, there are two correct options, A and D.