1. Compare and contrast primary and secondary growth.
WARM UP
Draw a cross-section of a tree trunk, labeling the cork cambium, vascular cambium, bark, heartwood, sapwood, xylem, and phloem.
Compare and contrast primary and secondary growth.

2. Leaf Structure

3. Basic Functions
Water Conservation
Waxy cuticle

4. Basic Functions
Transpiration
Loss of water
Drives water transport

5. Basic Functions
Gas exchange
CO2 and O2

6. Leaf Function
Photosynthesis
Chloroplasts

7. Leaf Structure
Epidermis
Covered in cuticle
Lipids and waxes

8. Leaf Structure
Stomata
Gas exchange
Water loss

9. Leaf Structure
Stomata
Guard cells open and close them

10. Leaf Structure
Palisade layer
Densely packed
Chloroplast-rich cells

11. Leaf Structure
Spongy layer
Looser cells
Fewer chloroplasts

12. Leaf Structure
Leaf veins
vascular bundles

13. WRAP UP
Leaves have a large surface area. List one positive and one negative about this structure.

14. WARM UP
Sketch a leaf, showing the palisade and spongy layers, vascular bundles, stomata, and epidermis

15. WRAP UP
Describe how a plant grows taller, using the terms apical meristem, leaf primordium, and bud primordium.

16. WARM UP
List 13 terms you will need to know for the test – define each of them using a single word.

17. WRAP UP List the 3 basic functions of leaves.
The 3 functions listed above all relate to one major overall function of leaves. What is it?