Soil Organic Matter MCQs Quiz 1

1. Which component contributes most to the recalcitrance (resistance to decomposition) of Soil Organic Matter? _______

2. The Soil Organic Matter (SOM) pool with the fastest turnover rate is _______

3. Soil Organic Matter acts as a major _______ of carbon

4. Labile carbon in soil organic matter is best defined as _______

5. Recalcitrant carbon in soil is best characterized as _______

6. The conceptual model of SOM describes it as _______

7. Soil Organic Carbon (SOC) differs from Soil Organic Matter because SOC represents _______

8. The Van Bemmelen factor used to convert Soil Organic Carbon (SOC) to Soil Organic Matter (SOM) is _______

9. Soil Organic Matter (SOM) primarily contains which of the following elements, except _______

10. Soil Organic Matter is best defined as _______