Photosynthesis

• photosynthesis is an endothermic reaction
• photosynthesis is a chemical reaction using light energy.
• plants make their own food in their leaves

  only a few microorganisms can do this
• photo-light

  synthesis-to make
• plants need mineral ions just like us
• chlorophyll/chloroplasts is what plays the main role in photosynthesis
• Leaves are green because they contain chlorophyll
• chlorophyll traps/absorbs light energy to make food
• water travels from the roots to the leaves
• osmosis- movement of water
• leaves are organs that are specially designed for photosynthesis
• ADAPTATIONS OF A LEAF

  • Flat & broad (large surface area) to absorb light & CO2
  • Thin SO THERE is a short distance for CO2 & water to travel to reach the Photosynthesising cells.
  • Water is transported from the roots to the veins through the midrib and veins.
  • Some plants can turn their leaves towards the sun