The tomato plant and the oxalis plant both achieve a maximum CO2 utilization rate. Why do you think higher and higher light intensities do not cause an over increasing of CO2 use?

Higher and higher light intensities do not cause an over increasing of CO2 use because of other RATE LIMITING FACTORS that affects it's utilisation.

Explanation:

The tomatoe and the oxalis plants are examples of flowering plants which manufactures it's food through the process of photosynthesis. The conditions necessary for photosynthesis to occur leading to the production of starch and oxygen includes:

--> presence of sunlight

--> presence of carbondioxide

--> presence of chlorophyll and

--> presence of water.

The above conditions are factors that can affect the rate of photosynthesis occuring in a plant. Increasing a particular factor can lead to another factor being limiting. An example is the effect of increased light intensity on carbondioxide utilisation. Increase in light intensity could lead to excess evaporation of water from the plant. This will interfere with the light stage of photosynthesis by affecting photolysis of water. If this occurs, carbondioxide won't be reduced to form sugar in the dark stage of photosynthesis since there won't be hydrogen provided by the co-enzyme NADP (Nicotinamide adenine dinucleotide phosphate).

the answer is d (apex) good luck : ))