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Ecosystems — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYEcosystems1 Mark
MCQ
Phosphorus cycles in the form of ____________?
  • A
    HPO3−
  • B
    P2 (gas)
  • C
    PO43−​
  • D
    Al2​(PO4​)3​
✓

Answer

  1. PO43−​

Explanation:

Phosphorus is obtained from soil as orthophosphate (PO43−​). Organic phosphorus circulates in nature from plants to animals. Phosphate is released by decomposers (Phosphatising bacteria) back to soil.

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