Limiting Factors of Photosynthesis

Question 1

temperature

Answer 1

optimum = late 20s/early 30s, decrease after as enzymes become denatured

Question 1

light intensity

Answer 1

increases until plant has received enough energy for photosynthesis

Question 2

CO2 concentration

Answer 2

increases until plant has received enough for photosynthesis

Question 3

chlorophyll

Answer 3

less = less photosynthesis

Question 4

practical investigating light intensity’s effect

Answer 4

algal balls, setting at distance from lamp, indicator red to yellow = more acidic, less photosynthesis, more CO2, indicator red to purple = more alkaline, more photosynthesis, less CO2

Question 5

light intensity and inverse square law

Answer 5

light intensity is inversely proportional to distance squared