Question

The natural reservoir of phosphorus is?

• A. Rock
• B. Animal bones
• C. Seawater
• D. Fossils

Answer 1

The correct option is A

Rock

The correct option is A.

Explanation of correct option:

1. Phosphates are extracted from rocks and dispersed throughout soils and water.
2. Phosphorus is found in biological membranes, nucleic acids, and cellular energy transfer systems in large amounts.

Explanation of incorrect options:

Option B:

1. Calcium, magnesium, potassium, phosphorus, and other trace minerals are abundant in animal bones.

Option C:

1. Seawater is rich in calcium.

Option D:

1. Fossils are rich in calcium carbonate.

Final answer: Rocks are the natural reservoir of phosphorus.