Answer:
The correct answer is the rate of photosynthesis increases with an increase in carbon dioxide.
Step-by-step explanation:
The amount of carbon dioxide is directly proportional to the rate of photosynthesis that means the photosynthesis rate will increase with increase in the amount of atmospheric carbon dioxide.
The carbon dioxide undergo reduction by the electrons supplied by the hydroxyl ion(OH-) generated during photolysis of water, to form glucose molecule. Plant utilizes glucose according to its own needs and the excess glucose is stored as starch.