JAMB - Biology (1987 - No. 20)
In the standard experiment to show that oxygen is given off during photosynthesis, sodium bicarbonate is used to
neutralize the acid in water
supply mineral salt to water plant
supply carbondioxide for photosynthesis
kill micro-organisms in water
Explicació
The bicarbonate solution will provide the elodea with the carbon dioxide it needs to use photosynthesis.