Factors that affect photosynthetic rate (5.2)

Question 1

State what the opening of the stomata controls

Answer 1

• loss of water

- entry of carbon dioxide

Question 2

Describe C3 plants

Answer 2

Rely on Calvin cycle (carbon fixation pathway) to convert CO2 into an organic compound

Question 3

State the effect of limited inputs on photosynthetic rate

Answer 3

If any one of the 3 required inputs is limited, photosynthesis will be limited

Question 4

Describe the relationship between light intensity and photosynthetic rate

Answer 4

Photosynthetic rate increases with an increase in light intensity until a point of saturation

Question 5

Describe the relationship between carbon dioxide concentration and photosynthetic rate

Answer 5

Photosynthetic rate increases with an increase in carbon dioxide levels

Question 6

Describe the relationship between temperature and photosynthetic rate

Answer 6

Photosynthetic rate increases with an increase in temperature until the optimal temperature range is reached

Question 7

Describe the effect of chloroplast availability on photosynthetic rate

Answer 7

Low chloroplast availability will limit photosynthetic reaction rate

Question 8

State the reactants of photosynthesis

Answer 8

Water and CO2

Question 9

State the products of photosynthesis

Answer 9

Glucose, oxygen and water