Photosynthesis and limiting factors

Question 1

What is photosynthesis?

Answer 1

An endothermic reaction in which energy is transferred from the environment to the chloroplasts by light.

Question 2

What is the word equation for photosynthesis?

Answer 2

Carbon dioxide + Water -> Glucose + Oxygen

Question 3

What is the balanced symbol equation for photosynthesis?

Answer 3

6CO2 + 6H2O -> C6H12O6 + 6O2

Question 4

What are the 5 main ways plants use glucose?

Answer 4

1. For respiration
2. Making cellulose
3. Making amino acids
4. To store as oils or fats
5. To store as insoluble starch

Question 5

What 4 factors affect the rate of photosynthesis?

Answer 5

Temperature
Light intensity
CO2 concentration
Amount of chlorophyll

Question 6

What is the limiting factor for photosynthesis at night?

Answer 6

Light intensity.

Question 7

What is the limiting factor for photosynthesis in winter?

Answer 7

Temperature.

Question 8

What is the limiting factor for photosynthesis in warm and bright conditions?

Answer 8

CO2 concentration.

Question 9

What happens if a plant does not have enough chlorophyll?

Answer 9

The leaves will turn pale green or yellow and the rate of photosynthesis will reduce as the plant can’t absorb as much light.

Question 10

What is the formula for the inverse square law?

Answer 10

Light intensity = 1/d squared