Question

12. The given diagram shows an experiment to find out
whether carbon dioxide is needed for photosynthesis.
Glass cover
Light
Plant
1
Soda lime
(to remove carbon dioxide)
Which is the most suitable control for this
experiment?
Light
Light
00
15°C
25°C
A substance
to remove oxygen

Answer 1

Answer: IT IS NO........

Answer 2

Answer:

C

Explanation:

because d contains no light and it becomes a limited factor and we can not determine if co2 is needed or not. A contains no glass because there is more oxygen in the atmosphere 21% so it is not suitable. B contains oxygen removal substance