2 19 Photosythesis & Leaves

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  • 1. Leaves & Photosynthesis Plant: Hyacinth Term: Photosynthesis
  • 2. Hyacinth
    • Plant type: Interior Plant, Perennial
    • USDA Hardiness Zones: 6a to 9a
    • Height: 9" to 12" Spread: 3" to 5"
    • Exposure: partial shade to full sun
    • Blooms Color: Early to Mid spring, Blue, Pink, Purple, Red, White, Yellow
    • Soil: dry to moist, Loamy, Neutral, Well drained
    • Uses: Borders, forced potted plant, cut flower.
    • Extremely fragrant
    • Grows from bulbs – has vernalization requirement
  • 3. Photosynthesis
    • The process of converting energy from the sun and Carbon dioxide from the atmosphere into glucose (food).
    • Photosynthesis
    • Respiration – the OPPOSITE of photosynthesis
      • Carbohydrate + Oxygen + Water ->
        • Water + Carbon Dioxide + Energy
    • Plants photosynthesize & respire
  • 4. C 3 & C 4 Photosynthesis
    • Two kinds of photosynthesis: C 3 & C 4
      • C 4 Plants photosynthesis more rapidly than C 3
      • C 4 Plants can photosynthesize at hotter temperatures and brighter light than C 3
      • C 4 Plants use CO 2 more efficiently than C 3 Plants.
    • C 4 Plants are better suited to warm & tropical climates
    • C 3. Plants are better suited to more temperate areas
  • 5. Leaf Functions
    • Photosynthesis
      • Food Manufacture
      • Only in leaves & stems (Green parts)
    • Respiration
      • Opposite of photosynthesis
      • Necessary for growth
      • All plant cells
    • Transpiration
      • Water control
  • 6. Leaf Anatomy
    • Stomata – pore openings in the epidermis
    • Control water & gas flow
  • 7. Chloroplasts & Chlorophyll
    • Site of photosynthesis
    • Light phase
      • Sunlight to ATP
    • Dark phase
      • ATP to glucose
  • 8. Leaf Arrangements
  • 9. Leaf Shapes
  • 10. Leaf Margins
  • 11. Why is it important?
    • Leave shapes, margins, and arrangements are used to identify unknown plants.
    • ID keys take you step by step through the leaf arrangement until you have found the right plant
    • Common Trees of Va. book
  • 12. Fast Plants Seeds
    • Start Fast Plants
    • Everybody gets 6 seeds
    • 1 Petri Dish
    • Person with the highest seed production at the end of the lifecycle gets a Subway gift card.