Ecosystem Structure and Function · NCERT Biology

In the phosphorus cycle, what serves as the natural reservoir of phosphorus?

  1. Atmosphere
  2. Ocean water
  3. Sedimentary rocks
  4. Animal bones and tissue
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Correct answer: Sedimentary rocks

Phosphorus is a sedimentary cycle. Rocks contain phosphorus in the form of phosphates; when rocks weather, minute amounts of these phosphates dissolve in soil solution and are absorbed by plant roots.

Difficulty: Medium Question 18 of 20

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