Multiple choice

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

  1. Carbon

  2. Nitrogen

  3. Iron

  4. Manganese

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Carbon is the most abundant element in plants by mass (about 45-50% of dry weight), as plants are primarily composed of carbon-based compounds like cellulose, lignin, and sugars. Nitrogen is important but less abundant (1-5%), while iron and manganese are micronutrients.