1. Other things related to photosynthesis!

2. Learning outcomes
Be able to explain the difference between an action spectrum and an absorption spectrum C
Be able to apply knowledge of action & absorption spectrums to specific situations B
Be able to explain how growers apply this knowledge of limiting factors to commercial glasshouses. B
Be able to interpret data to evaluate such applications. A

3. Absorption spectrum

4. Action spectrum

5. Absorption spectrum = the amount of light that are absorbed at each wavelength of light
Action spectrum = that rate of photosynthesis at the different wavelengths of light

6. Increase the yield You have a green house picture.
Annotate it with a variety of things you could do or add which would increase the rate of photosynthesis.
There must be an explanation as detailed and specific as possible which explain how this would increase the yield.

8. Growing environ-ment
Mean plant height (cm)
Mean fruit yield per plant (g) T1
97.50
1348.5 T2
105.83
2145.2 T3
104.83
2055.0 T4
75.40
981.0

9. Compare T1 and T2 on the graph
1. What differences are there between the 2 temperatures?
Provide reasons for the differences.
2. Which temperature range produces the highest yield for this tomato?
Use the data to prove your point.
3. Suggest one other factor that might be responsible for the differences between T1 and T4.
Is this factor significant?
Are the results valid and trustworthy?
4. How could the results from this investigation help people who grow tomatoes in this country to decide which is the best environment?

10. Using both pieces of information
Which temperature range produces the highest yield for this tomato?
Use the data to prove your point.

11. Suggest ….. no right or wrong answer just a sensible idea backed up with fact
Suggest one other factor that might be responsible for the differences between T1 and T4.
Is this factor significant?
Are the results valid and trustworthy?

12. Applying the knowledge
How could the results from this investigation help people who grow tomatoes in this country to decide which is the best environment?