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Multiple Choice
How does temperature affect the rate of oxygen production during photosynthesis in plants?
A
Oxygen production decreases steadily as temperature increases.
B
Oxygen production continuously increases as temperature rises, with no upper limit.
C
Oxygen production increases with temperature up to an optimal point, then decreases if the temperature becomes too high.
D
Oxygen production is not affected by temperature changes.
Verified step by step guidance
1
Understand the relationship between temperature and enzyme activity: Photosynthesis relies on enzymes like Rubisco to facilitate chemical reactions. Enzymes have an optimal temperature range where they function most efficiently.
Recognize the role of temperature in photosynthesis: At lower temperatures, enzyme activity is slower, which reduces the rate of photosynthesis and oxygen production. As temperature increases, enzyme activity speeds up, enhancing photosynthesis up to an optimal temperature.
Identify the concept of denaturation: Beyond the optimal temperature, enzymes can denature (lose their functional shape), which decreases their ability to catalyze reactions. This leads to a decline in photosynthesis and oxygen production.
Consider the impact of temperature on other factors: High temperatures can also affect the stability of cellular structures, increase water loss through transpiration, and reduce the availability of carbon dioxide, further limiting photosynthesis.
Summarize the pattern: Oxygen production during photosynthesis increases with temperature up to an optimal point, but decreases if the temperature exceeds this optimal range due to enzyme denaturation and other physiological stresses.