光合作用：練習題

The rate of photosynthesis can be affected by several limiting factors. If a plant is kept at a constant temperature of \(25^{\circ}C\) and provided with optimal light intensity, but the rate of photosynthesis remains low, which change would most likely increase the rate?

A plant is placed in an environment with very low light intensity. Over several hours, the rate of photosynthesis is measured.
If the temperature and carbon dioxide concentration are increased while the light remains low, why does the rate of photosynthesis fail to increase significantly?

In an experiment investigating photosynthesis, a student increases the carbon dioxide concentration while keeping light intensity and temperature constant. The rate of photosynthesis increases initially but then levels off. What is the most likely reason for the rate leveling off?

A plant is growing in an environment with very low light levels. Which of the following would be the most likely limiting factor for the rate of photosynthesis, and how is the glucose produced subsequently utilized to strengthen the plant?

The rate of photosynthesis is determined by several interacting environmental factors. Explain why the rate of photosynthesis might stay constant even if the light intensity is increased, and identify two other variables that could be acting as limiting factors in this scenario.

The rate of photosynthesis can be limited by various environmental factors. Explain how temperature and carbon dioxide concentration can interact to limit the rate of glucose production, even when light intensity is optimal.

The rate of photosynthesis can be affected by several environmental factors. A student set up an experiment to investigate the effect of light intensity on the rate of photosynthesis in pondweed.

a) Name the gas released by the pondweed and describe how the student could measure the rate of its production.
b) The student noticed that as the light source was moved closer to the plant, the rate of photosynthesis increased up to a certain point and then leveled off. Explain why the rate did not continue to increase.
c) Write the balanced chemical equation for photosynthesis using molecular formulas.