1. EVOLUTION OF LAND PLANTS

2. From Last Day:

3. Closest Living Relatives of Land Plants - Charophytes

4. Some Charophytes
Chara
Coelochaete

5. Typical Charophyte habitat?
Adaptations? - sporopollenin (polymer)

6. Pollen grains – land plants

7. Closest Living Relatives of Land Plants - Charophytes
Why?? – 4 features
1) Rosette-shaped cellulose-synthesizing complex
2) Peroxisome enzymes
3) Structure of sperm
phragmoplast
4) Formation of a phragmoplast
These are all shared ancestral traits

8. What makes land plants unique
1. Alternation of generations
Two different kinds of organisms
1) Gameophyte
2) Sporophyte

9. What makes land plants unique
2) Walled spores produced in sporangia
Sporopollenin in walls -

10. What makes land plants unique
3) Multicellular gametangia

11. What makes land plants unique
4) Apical meristems

12. Who are the land plants and how are they related

14. Non-vascular Plants – The Bryophytes
Liverworts
Hornworts
Non-vascular Plants – The Bryophytes
Mosses
Club mosses
Ferns
Gymnosperms
Note: The bryophytes and the Bryophyta are not the same
Angiosperms
Bryophyte – a collective term for the liverworts, hornworts and mosses
(3 separate phyla)
Bryophyta – the formal Latin name for the phylum of the mosses

15. Non-vascular Plants – The Bryophytes
Liverworts
Hornworts
Non-vascular Plants – The Bryophytes
Mosses
Club mosses
Ferns
Who are they?
Gymnosperms
Angiosperms
1) Liverworts
Thalloid
Leafy

16. Non-vascular Plants – The Bryophytes
Liverworts
Hornworts
Non-vascular Plants – The Bryophytes
Mosses
Club mosses
Ferns
Who are they?
Gymnosperms
Angiosperms
2) Hornworts

17. Non-vascular Plants – The Bryophytes
Liverworts
Hornworts
Non-vascular Plants – The Bryophytes
Mosses
Club mosses
Ferns
Who are they?
Gymnosperms
Angiosperms
3) Mosses

18. Non-vascular Plants – The Bryophytes
Liverworts
Hornworts
Non-vascular Plants – The Bryophytes
Mosses
Club mosses
Ferns
Key feature of all the bryophytes
Gymnosperms
Angiosperms
Gametophyte is dominant part of the life cycle
Sporophyte
Gametophyte

19. Life cycle of a Moss