Final answer:
A plant leaf that loses CO2 too quickly will experience reduced photosynthesis, as CO2 is essential for the Calvin cycle, impacting the plant's ability to produce glucose and grow.c) Reduced photosynthesis
Step-by-step explanation:
If a plant leaf loses CO2 too quickly during photosynthesis, it is predicted that there will be reduced photosynthesis. This is because CO2 is a critical component in the Calvin cycle, where it is fixed into organic molecules. A reduction in CO2 concentration within the leaf can slow down or even stop this cycle, leading to less glucose being produced for the plant's growth. Moreover, on hot, dry days, plants may close their stomata to conserve water, which further reduces CO2 uptake and inhibits the rate of photosynthesis.