1. Photosynthesis Lesson Objectives:
Thursday, July 05, 2018
Photosynthesis
Lesson Objectives:
Describe how substances needed for photosynthesis enter and leave leaves
Explain how leaves are adapted for photosynthesis
Starter
Can you remember the word and symbol equation for photosynthesis?

2. Task
On your table – on the scrap paper – spider diagram Photosynthesis
Write down ANY words you would associate with photosynthesis

3. Plant cells

4. Photosynthesis

5. Equations

6. Products of photosyntheis
Glucose
Soluble so can be transported around the plant dissolved in water
Can be made into insoluble starch which can be stored inside cells and used later
Can be converted into cellulose used in call walls
Can be converted to proteins
Can be made into fats and oils

7. Structure of a leaf

8. Autumn leaves

9. Autumn leaves Chlorophyll is green
During winter plants absorb the chlorophyll from the leaves so they can drop the leaves but not loose the chlorophyll.
Because the chlorophyll has been absorbed the leaves change colour

10. Adaptations of leaves to photosynthesis
Large surface area to absorb light
Thin so gasses don’t have far to diffuse
Containing chlorophyll
Network of veins to transport water and sugars
Having stomata to allow gasses to diffuse in and out

11. Activities 1. How does water get into leaves 2. Adapted leaves
(1o minutes at each activity then class discussion)

12. To finish off... You should now be able to....
Describe how substances needed for photosynthesis enter and leave leaves
Explain how leaves are adapted for photosynthesis

13. Final question Gardeners like plants with variegated leaves.
How might these plants be at a disadvantage to other garden plants?