Nutrient Cycling MCQs (Quiz 7)

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

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

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

4. Carbonation is particularly important in the weathering of ________________

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

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

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

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

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

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