1. Calculate What percent of all plants are flowering plants
Interpret Graphs What is the second largest group of plants
Pose Questions What question about plant evolution would you ask based on the data in this graph
Graph also
on pg 530.

2. Ch 22 Introduction to Plants
22.1 What is a Plant?

3. The Plant Kingdom Eukaryotes Cell walls containing cellulose
Photosynthesis using chlorophyll a and b.

4. What Plants Need
Sunlight.

5. What Plants Need Sunlight
Way to exchange gases with the surrounding air.

6. What Plants Need Sunlight
Way to exchange gases with the surrounding air
Water and Minerals.

7. Origins in the Water Ancestors were similar to today’s green algae
Green algae more closely related to plants.

8. The First Land Plants Biggest obstacle
Getting water
Grow close to the ground in damp locations.

9. An Overview of the Plant Kingdom
Five major groups based on four important features:
Embryo formation, specialized water-conducting tissues, seeds, and flowers.

10. Alternation of Generations
Shift between the haploid phase and the diploid phase.

11. Sporophyte
Multicellular diploid phase
Spore-producing plant.

12. Sporophyte Produces haploid spores through meiosis
Spores grow into multicellular structures called gametophytes.

13. Gametophyte
Multicellular haploid phase
Gamete-producing plant.

14. Gametophyte Produces reproductive cells called gametes
Sperm and egg fuse producing diploid zygote that becomes a new sporophyte.

15. Trends in Plant Evolution
Reduction in size of the gametophyte and the increasing size of the sporophyte.