1. Welcome back! We’re almost done…
Major Due Dates…
Plant Graphic organizer assignment
– Thurs, Jan 14th
GMO Debate – Tues, Jan 19th
Plant Unit Test – Wed, Jan 20th
Exam Review Day – Jan 21st and 22nd
Final Exam – Tues, Jan 28th

2. Unit 5 Plants: Anatomy, Growth & Function

3. Remember the Kingdoms?

4. Characteristics of Plants
Eukaryotic cells
Cells have cell walls that contain cellulose
Cells have numerous organelles
Lack mobility
Can undergo photosynthesis (autotrophs)

5. Evolution of Plants Onto Land
To make the transition to land, plants had to adapt and undergo major modifications:
Supportive structure  stems & roots
Anchoring structure  roots
Transport system  vascular system
Means to Reduce Water Loss  cuticle (leaf)
Means to Exchange Gases  stomata (leaf)
Reproductive Structures For Dry Conditions  spores, pollen, flowers, fruit, & seeds

6. IMPORTANCE OF PLANTS Plants are the Base of Food Chain  Producers!!
Photosynthesis is the creation of food energy from sunlight, CO2, and water
This is the only source of energy for all living things!
Recall:
Sunlight + CO2 + H2O  C6H12O6 + O2

7. IMPORTANCE OF PLANTS (Con’t)
Plants Provide SHELTER
Animals use plants as protection from the elements and predators!
Plants Create the PHYSICAL ENVIRONMENT of the Ecosystem
Animals have evolved to use the habitat and conditions created by plant life to survive!

8. IMPORTANCE OF PLANTS (Con’t)
Importance of Plants to Humans:
Food & Food Processing
Energy (Fires)
Clothing
Construction
Medicine, etc.

9. PLANTS & BIODIVERSITY
Plants support all the animal species living in an ecosystem
1 plant species supports an average of 50 different animal species!!
plant species support 10 million animal species
As many as ¼ of the world’s plant species are endangered! (Science)

10. Human Activity & Plants
Deforestation
Agriculture
Segmentation of Habitat
Pollution
Invasive Species (40% of all extinctions)
Monocultures

11. Graphic Organizer…
You have the rest of the class to work on this assignment
It is due on Monday, Jan. 12th!!