Biology
Grade-7
Easy

Question

The plants' straws and stalks are strengthened by the _________________ in the fertilizers.

  1. Nitrogen
  2. Phosphorous
  3. Potassium
  4. Silicon

The correct answer is: Potassium


    • The plants straws and stalks are strengthened by fertilizers potassium content
    • The protoplasm of the cell contains phosphorus which is essential for cell growth

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