Rate of photosynthesis

Question 1

What is a limiting factor?

Answer 1

Something which stops photosynthesis from happening any faster

Question 2

Examples of limiting factors

Answer 2

Light intensity, CO2 concentration, and temperature

Question 3

What do limiting factors depend on?

Answer 3

Environmental conditions

Question 4

How does the rate of photosynthesis change as light energy is increased?

Answer 4

1) It increases steadily up until a certain point.

2) After this point is reached, it won’t make a difference because light intensity is no longer the limiting factor.

Question 5

How does the rate of photosynthesis change as CO2 concentration is increased?

Answer 5

1) It increases steadily up until a certain point.

2) After this point is reached, it won’t make a difference because CO2 is no longer the limiting factor.

Question 6

How does the rate of photosynthesis change as temperature is increased?

Answer 6

1) It causes it to increase because it affects the enzymes involved.
2) Up until a certain point.
3) If the temperature gets too high, the enzymes will denature.
4) So the rate of photosynthesis decreases.

Question 7

When is temperature usually the limiting factor?

Answer 7

When it is too low