Given two areas with equal sunlight and available water. area i has a high amount of atmospheric carbon dioxide while area ii has a low amount of atmospheric carbon dioxide.

how does the rate of photosynthesis in area i compare to that in area ii?
a) atmospheric carbon dioxide has no affect on the rate of photosynthesis.
b) the rate of photosynthesis increases with a decrease in carbon dioxide.
c) the rate of photosynthesis increases with an increase in carbon dioxide.
d) the level of carbon dioxide increases with the level of available oxygen

The correct answer is c The rate of photosynthesis increases with an increase in carbon dioxide.

Explanation:

The atmospheric carbon dioxide is the principle substrate during photosynthesis.Plants during the process of photosynthesis utilizes the atmospheric CO2 to form glucose along with liberation of oxygen gas(O2).

 The rate of photosynthesis is directly proportion to the level of atmospheric CO2.Which means increase in atmospheric CO2 increases the rate of photosynthesis and vice versa.

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