Multiple choice

Which of the following is required by plants for the active uptake of minerals?

  1. Respiration

  2. Expenditure of energy

  3. Root metabolism

  4. Photophosphorylation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Active transport of minerals against their concentration gradient requires energy expenditure (ATP). While respiration produces the ATP and root metabolism is involved, the direct requirement for active uptake is the expenditure of energy. Photophosphorylation occurs in chloroplasts during photosynthesis, not directly in mineral uptake.

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