Presentation 1307

1. Kingdom Plantae
BIOL 1307
Ebeling
VIDEO: “What Plants Talk About”
http://video.pbs.org/video/2338524490/

2. Learning Objectives
1. Describe the characteristics common to all plants
2. Explain the evidence supporting the evolution of
plants from green algae.
3. Understand the adaptations necessary for plants to
become dominant terrestrial organisms.

3. Cellulose Cell Walls

4. Photosynthesis
=use of solar energy
to build simple
Carbohydrates
Occurs in the chloroplasts
of plant cells

5. Figure 19.3 Contd.
DOMAIN EUKARYA
Plants
DOMAIN
BACTERIA
DOMAIN
ARCHAEA
Animals
Fungi
Protista
Prokaryotes

6. Plants and green algae share a common ancestor
Shared characteristics between plants
and green algae:
● autotrophs
● eukaryotic cells
● cell walls made of cellulose
● contain the same chlorophyll and
other accessory pigments for
photosynthesis
● store excess food as starch
• Chara, a green algae that may resemble the
common ancestor of plants and algae

10. Adaptations for life on land

11. Plant Phylogeny

12. Figure 19.3
Flowering plants
Seed plants
Vascular
plants
Land plants
Flowers and fruits
Pollen and
seeds
Xylem and phloem
Cuticle
and stomata
Ancestral
protist
Angiosperms
Gnetophytes
Conifers
Ginkgos
Cycads
True ferns
Horsetails
Whisk ferns
Club mosses
Mosses
Hornworts
Liverworts
Seedless
vascular
plants
Gymnosperms
Bryophytes

14. Non-vascular Plants = Bryophytes
True mosses
Liverworts
Hornworts

16. Seedless vascular plants
Ferns
Horsetails

18. SEEDS!
The next big thing in plant evolution.

19. What is an embryo?
● Fertilization is the joining of egg
and sperm (gametes) to form a
zygote.
● A zygote is a fertilized egg and is
a single cell.
● The embryo develops from a
zygote. It is multicellular.
embryo in
a seed

20. Gymnosperms
Conifers (evergreens)
Cycads
Gnetophytes
Ginkgo

21. Gymnosperm Reproduction
-Cones
-Pollen
-Seeds
-Some species have
separate male and
female plants
-Some species have
male and female
cones on same plant

22. Gymnosperm reproduction
comparable to chordate
reproduction. Embryo develops
in female parent.

23. Angiosperms

24. Double Fertilization

32. https://youtu.be/_WiHGaOqZNg

33. Reproduction comparisons

34. Summary
● Plants are classified based on
adapations to living on land
● Plants are important to human life
o ecosystem—basis of food
webs
o produce oxygen
o practical
uses/products/medicines
o habitat for other organisms
o soil erosion prevention
o carbon sink
Fig. 19.21