Multiple choice

Which of the following plants is more efficient in carbon fixation?

  1. Cactus and barley

  2. Sorghum and millet

  3. Wheat and paddy

  4. Potato and pineapple

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

C4 plants like sorghum and millet use PEP carboxylase to concentrate CO2 at RUBISCO, minimizing photorespiration. This makes them more efficient than C3 plants like wheat and paddy.