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What effect does increased CO2 concentration generally have on photosynthesis in plants?

It increases the rate of photosynthesisIt decreases the rate of photosynthesisIt has no effect on photosynthesisIt only affects certain types of plants

Which of the following factors can limit plant growth, even if CO2 levels are elevated?

Water availabilitySunlight exposureNutrient availabilityAll of the above

In the context of plant responses to elevated CO2, what is 'carbon saturation'?

The point where plants cannot increase photosynthesis any further despite additional CO2A method to measure CO2 levels in plant experimentsThe maximum amount of carbon a plant can absorb per seasonThe ability of a plant to withstand high temperatures

Assessment

What effect does increased CO2 concentration generally have on photosynthesis in plants?

Which of the following factors can limit plant growth, even if CO2 levels are elevated?

In the context of plant responses to elevated CO2, what is 'carbon saturation'?