plant structure

• equation for photosynthesis

  carbon dioxide + water —> glucose + oxygen

  6CO2 + 6H2O —> C6H12O6 + 6O2
• broad leaves 


  provide large surface area to absorb as much light as possible
• thin leaves 


  provide a short diffusion pathway to for gases to move in and out of cells
• network of tubes ( xylem and phloem)

  transport water , mineral ions and glucose ( food ) around the plant
• lots of chloroplast 


  contains chlorophyll which traps energy from sun for photosynthesis
• stomata 


  tiny holes found under the leaf to allow gases to diffuse in and out of the leaf
• guard cells

  controls the opening and closing of the stomata
• leaf structure

  1. upper layer
  2. palisade layer
  3. spongy mesophyll layer
  4. lower layer