1. Chapter 30 Plant Diversity ii
The Evolution of Seed Plants

3. Nonvascular
Seedless Vascular
Seeded Vascular

4. Gymnosperms “Naked Seeds” – When you go to the gym, some people have minimum clothing on…
Cycadophyta
Known as ‘cycads’
Ginkgophyta
Only one species exists: Ginkgo biloba
Since there is only one species left, I remember this with the question “Where did its kin go?” (I know it’s a stretch but ‘kin go’ sounds like ‘ginkgo’ and the question implies that the species is alone….aww)
Gnetophyta
Used for medicinal purposes like ephedra – that’s so ‘neat’! (‘Gneto’ sounds like ‘neat’)
Coniferophyta
Conifers…duh

5. Practice the Pine Life Cycle

7. *Megaspore -> Mitosis -> Female Gametophyte (takes about 15 months to mature) -> Mitosis -> Egg
°Pollen grain -> Mitosis -> Male Gametophyte (grows pollen tube, reaches female gametophyte in about 15 months) -> Discharges sperm nucleus to fertilize egg * * *
I tried to remove/cover-up the labels that you didn’t need to know so that you could focus on the important ones!

8. Angiosperms Flowering Plants – “My friend Angie owns a flower and fruit shop”

9. Life Cycle of Angiosperm
Note the Double Fertilization!
Click on play button to play video

10. Practice!

12. What did the diagram that Dr. Cusic drew on the board mean?
How those cells actually look like in the megaspore/embryo sac N N N N N N N N
Egg N 2N
Polar Nuclei
Mitosis X 3

13. What did the diagram that Dr. Cusic drew on the board mean?
Sperm N N 2N
Egg + N
Zygote N 2N
Polar Nuclei + 3N N
Endosperm
Mitosis X 3

14. Monocots vs. Eudicots