1. Unit 5 Plant Science

2. Importance of Plants Food Clothing Oxygen Medicines Cosmetics Reduce erosion

3. Parts of a Plant 5 Main Parts Leaves Roots Stems Flowers Seeds

4. Leaves

5. Roots Fibrous finely branched roots Tap one central root Adventitious grow from stems or leaves Aerial above ground – no main root system

6. Stems Buds form at nodes Internode = space between nodes Vascular system = phloem and xylem Many times used as silage for livestock

7. Flowers Female = Pistil – stigma, style, ovary Male = Stamen – anther, filament – pollen forms on anther Ovules form into seeds Ovary forms the fruit

8. Seeds

9. Plant Growth

10. Photosynthesis Water + Carbon Dioxide Sugar + Oxygen Chlorophyll Sunlight

11. Fruits, Nuts and Vegetables Pomology and Olericulture Fruits – Pome or Stone – Citrus or Non-citrus Vegetables Nuts

12. More than Just Food and Fiber Plant medicines Cosmetics Gifts Recreation Decoration Noise buffers Animal homes

13. Genetically Modified Plants Parent traits are passed along through reproduction (genes) Hybrids combine traits from different species Genetic modification changes the genetic make-up of plants