Biology Topic Practice

CO2 Concentration as a Limiting Factor

Carbon dioxide is a reactant in photosynthesis; if there isn't enough, the process slows down.

How can a farmer increase the CO2 level in a greenhouse?

What is CO2 Concentration as a Limiting Factor?

"Carbon dioxide concentration refers to the amount of CO2 available for the photosynthesis reaction."

Question 1

Which substance can limit the rate of photosynthesis because it is a reactant in the photosynthesis equation?

Question 2

Choose the correct answer: which substance can limit the rate of photosynthesis because it is a reactant in the photosynthesis equation?

Question 3

Select which substance can limit the rate of photosynthesis because it is a reactant in the photosynthesis equation?

Carbon Dioxide Levels

Increasing CO2 increases the rate of photosynthesis until another factor limits it.

CO2 concentration in the atmosphere is roughly 0.04%.

In a greenhouse, burning paraffin lamps can increase CO2 levels.

Exam Tip

CO2 is often the limiting factor on a sunny, warm day.

Accelerate your revision

Master co2 concentration as a limiting factor and more with our exam-focused practice app.

Try the App Free
No sign-up required to start