1. Plants

2. What is a plant?
A multicellular eukaryote with cells surrounded by cell walls made of cellulose and with a waxy waterproof coating called a cuticle.

3. Problems Faced by Living on Land
1. Dehydration
2. Exchange of Gasses
3. Transport of Nutrients
4. Support for Growth

4. Water Loss
….Cuticle and Guard Cells
Gas Exchange
….Stomata
Material Transport
….Xylem and Phloem

6. Plant Phylogeny Green algae about 400 million years ago.
Both have cell walls made of cellulose.

7. Both have same photosynthetic pigments.
Both store energy in the form of starch.
Both exhibit alternation of generations.

9. Plant Reproduction

11. Advantages of Seeds:
Protection: Drying out, damage, disease
Nourishment: Food for the start
Plant dispersal: Wind, Water, Animals
Delayed Growth: Droughts, winters

13. Roots Anchor the plant in the ground
Absorb water and minerals form the soil

14. Leaves
Photosynthesis in the Mesophyll and gas exchange.

15. Tropisms