Question:
The natural reservoir of phosphorus is:
The natural reservoir of phosphorus is:
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Phosphorus is a critical nutrient in ecosystems but lacks a gaseous phase.
Updated On: Mar 29, 2025
- Rocks
- Soil solution
- Detritus
- Atmosphere
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The Correct Option is A
Solution and Explanation
The natural reservoir of phosphorus is Rocks.
(A) Rocks - Correct: Phosphorus exists primarily in phosphate minerals (apatite) in Earth's crust.
(B) Soil solution - Incorrect: While present here, it's not the primary reservoir.
(C) Detritus - Incorrect: Organic matter contains phosphorus but isn't the original source.
(D) Atmosphere - Incorrect: Unlike nitrogen, phosphorus has no significant atmospheric pool.
The correct answer is (A) Rocks, as phosphorus cycles slowly through weathering of phosphate rocks.
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