The rate of photoynthesis

Question 1

what does light do in photosynthesis

Answer 1

light provides the energy needed for photosynthesis

Question 2

what happens to the rate of photosynthesis as light intensity increases

Answer 2

as the light level is raised, the rate of photosynthesis increases steadily - but only up to a certain point

Question 3

what happens to the rate of photosynthesis with CO2 concentration

Answer 3

as with light intensity, the amount of CO2 will only increase the rate of photosynthesis up to a point. After this the graph flattens out

Question 4

what is the limiting factor if light and CO2 are in plentiful supply

Answer 4

temperature

Question 5

usually why is temperature the limiting factor

Answer 5

because its too low - the enzymes needed for photosynthesis work more slowly at low temperatures.

Question 6

what happens if the plant gets too hot

Answer 6

the enzymes it needs for photosynthesis and its other reaction will be damaged.

Question 7

practical for photosynthesis

Answer 7

in book