Nutrient Cycling MCQs (Quiz 7)

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

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

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

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

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

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

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

8. Carbonation is particularly important in the weathering of ________________

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

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