[Campbell Biology P.860] Based on Table 37.1, which element constitutes the largest percenta... | Practice Question

Based on Table 37.1, which element constitutes the largest percentage of a plant's dry mass?

  • A: Nitrogen (NO3-, NH4+)
  • B: Potassium (K+)
  • C: Carbon (CO2)
  • D: Phosphorus (H2PO4-, HPO42-)

Explanation

Table 37.1 clearly states that Carbon and Oxygen each constitute 45% of the dry mass, making them the elements with the largest percentage.