Nutrient Cycling MCQs (Quiz 7)

1. Which nutrient is most susceptible to leaching from agricultural soils?

2. Which of the following essential plant nutrients is primarily derived from the weathering of apatite rock?

3. Nitrogen-fixing bacteria convert atmospheric nitrogen gas (N₂) into _______________, is then readily used by plants

4. Where is the primary reservoir of phosphorus in the sedimentary phosphorus cycle?

5. Which of the following is NOT a weathering agent?

6. Under aerobic conditions, plants absorb nitrogen mainly in the form of __________________

7. Carbonation is particularly important in the weathering of ________________

8. In nutrient cycling, weathering is important because it _______________

9. Denitrification returns nitrogen to the atmosphere in which form?

10. In ecology, a nutrient budget is best defined as ________________________________________