Sodium hydrogencarbonate is added to water around pondweed to

  1. supply carbon dioxide
  2. supply oxygen
  3. provide light
  4. keep the pH low
Answer

A) supply carbon dioxide

It releases CO₂. AS & A Level Biology · Topic 13 Photosynthesis · 13.2 Investigation of limiting factors

Biology MCQ · More A Level Biology: Photosynthesis MCQs · Practise