1. The structure of leaves and the use of glucose
Lesson aims
To study the structure of leaves and how this links to their role in photosynthesis
To learn how glucose produced in photosynthesis is used in plants

2. Learning Outcomes By the end of the lesson you should :
know the parts of plant and animal cells and their functions
know how leaf cells close to the upper surface of the leaf are adapted for photosynthesis
know how glucose is used and stored in a plant

3. What did you find out last lesson?

4. Copy: Plant cells have three “extra” things than animal cells:
Only plant cells have these:
Both types of cell have these: 4)
Cell wall – provides support 1)
Cytoplasm - this is where the reactions happen 2)
Nucleus – The “brain” of the cell 5)
Chloroplasts – contain chlorophyll 3)
Cell Membrane – holds the cell together 6)
Large Vacuole – contains sap
Copy the diagrams into your exercise book

5. Leaves
On the underside of the leaf are small openings or pores called the stomata. The stomata serve as the lungs of the leaf allowing air to enter. The stomata allow the evaporation of water and the release of oxygen during the night.
The outer layers of the leaf are covered with a waxy layer which prevents the leaf from drying out. 5

6. Read page 66 Connecting science

7. Photosynthesis happens in the “palisade” cells in the leaf:
Copy the cross section of a leaf into your books

8. Close up on a palisade cell:
Cell wall
Cell membrane
Chloroplasts (containing chlorophyll)
Large vacuole
Nucleus
Cytoplasm
Explain how the palisade cells are adapted for photosynthesis

9. Copy the diagram of a stomata Explain how the stomata are used during photosynthesis (page 66 )

10. What happens to glucose produced in photosynthesis?
What process does a plant use glucose for?
Copy and complete the table
Substance made from glucose
How do you think the substance is used in the plant

11. Learning Outcomes By the end of the lesson do you:
know the parts of plant and animal cells and their functions
know how leaf cells close to the upper surface of the leaf are adapted for photosynthesis
know how glucose is used and stored in a plant