Question
- Name the specific cellular components, where phosphorus is in abundance in living organisms.
- Name the natural reservoir of phosphorus.
- Explain the phosphorus cycle.
✓
Answer
-
The cellular components, where phosphorus is abundant include:
- Biological membranes.
- Nucleic acids.
- Energy transfer systems (like ATP and GTP).
- The natural reservoir of phosphorus is rock.
- Phosphorus cycle:
- The rocks contain phosphorus in the form of phosphates.
- During weathering of rocks, some amount of phosphates dissolve in the soil solution and plants absorb them.
- Herbivores and other carnivores obtain it directly or indirectly, plants.
- The phosphate-solubilising bacteria release phosphorus back to the soil, when they decompose the dead and decaying organic matter.
Refer to Fig. 14.5 in the text,
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