Parts and Functions of Leaves- A Plant Biology Day 1 Lesson

A lesson on parts and function of a leaf.

1. Leaves Parts and Function

2. Catalyst If you had to eat any leaf, what would it be and why? Reminders AET due Sunday Lab Packets Due Today

3. Labeling a Leaf Get in groups of 3-4 1 person from your group grab leaf diagram with labels Label the leaf collaboratively You have 5 minutes

4. Leaf Base T he slightly expanded area where the leaf attaches to the stem

5. Leaf Blade Broad portion of the leaf

6. Petiole S talk that supports a leaf in a plant and attaches it to the stem

7. Axil Angle between the top of a leaf or stem and the stem or branch that it grows from

8. Tip Part farthest from the point of attachment of leaf

9. Margin B oundary area extending along the edge of the leaf

10. Stem P lant axis that bears buds and shoots with leaves

11. Vein S mall channels or capillaries that transport water and minerals to and from the leaf of a plant

12. Midrib M ain supporting structure of the leaf, controls the leaf shape and growth direction

13. Leaf Function

14. Defense S tructural Ex. thorns, surface wax Chemical Ex. flavonoids, terpenoids, and alkaloids Protein-based Ex. RUBISCO (ribulose bisphosphate carboxylase/oxygenase)

15. Energy Harvest AKA Photosynthesis

16. Energy Storage St ore energy in the form of glucose and starch Used for various plant processes, growth, and as a reserve Essential for supporting plant reproduction

17. Simple vs. Compound Leaves

18. Simple Leaves Not divided into separate units Always attached to a twig by its stem or the petiole

19. Compound Leaves Leaflets arranged on both sides of an axis Many leaflets joined to a single stem

20. Simple or Compound

21. Simple or Compound

22. Simple or Compound

23. Simple or Compound

24. Simple or Compound

25. Simple or Compound

26. Simple or Compound

27. Daily Review Write down 3 questions to review what we’ve covered today. What would you expect to see on a test?