Question 20
Photosynthesis and Plant NutritionIn the standard experiment to show that oxygen is given off during photosynthesis, sodium bicarbonate is used to
- A.neutralize the acid in water
- B.supply mineral salt to water plant
- C.supply carbondioxide for photosynthesis
- D.kill micro-organisms in water
Show the answer and explanation
Answer: C (supply carbondioxide for photosynthesis)
Explanation
Sodium bicarbonate releases carbon dioxide into the water, so the water plant has plenty of carbon dioxide for photosynthesis.