QUESTION: Which one of the following is not a factor of soil formation?
A Time
B Soil texture
C Organic matter
D Inorganic matter
ANSWER:
Soil texture
| Factor |
Description |
Role in Soil Formation |
| Relief |
The topography or landscape features of an area, including elevation, slope, and drainage. |
· Steep slopes can lead to erosion, while flat areas accumulate sediment.
· Influences water movement and soil moisture. |
| Time |
The duration over which soil-forming processes interact to develop mature soil characteristics. |
· Longer periods allow for the accumulation of organic matter, weathering and soil horizon formation. |
| Parent Rock |
The original geological material from which soil forms, influencing mineral composition. |
· Determines the initial mineral composition of the soil. |
| Flora |
Plant life in an area, which contributes to organic matter, root activity and soil stability. |
· Plants contribute to organic material through litter and root decay.
· Roots help to bind soil particles. |
| Fauna |
Animal life within the soil ecosystem, influencing soil structure, aeration and nutrient cycling. |
· Soil fauna create burrows that improve soil aeration.
· Fauna contribute to decomposition and nutrient availability. |
| Microorganisms |
Microscopic organisms such as bacteria and fungi play key roles in nutrient cycling and decay process. |
· Microorganisms break down organic matter, releasing nutrients.
· Microbes help in nutrient transformation. |
