Multiple choice

Which of the following is the most abundant element found in plants?

  1. Carbon

  2. Nitrogen

  3. Iron

  4. Manganese
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A Correct answer
Explanation

Carbon is the most abundant element in plants by mass, constituting approximately 45% of plant dry weight. This is because plants are primarily composed of carbon-based compounds like cellulose, lignin, and other organic molecules built through photosynthesis. While nitrogen, iron, and manganese are essential nutrients, they are required in much smaller quantities than carbon.

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