Biology
Grade-7
Easy

Question

Which of the following elements is not obtained in the form of ions by most plants?

  1. Calcium
  2. Nitrogen
  3. Magnesium
  4. Phosphorus

Hint:

Along with sugars, this element forms the backbone of DNA.

The correct answer is: Phosphorus


    • Phosphorous is important for the growth and metabolism of plants
    • Phosphorous forms a part of the energy molecule called ATP
    • Soil contains phosphorous in the form of rocks
    • Phosphorous is artificially provided in the form of fertilizers, manures, etc

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