leaf structures

• what is the epidermal layer covered in?

  a waxy cuticle which reduces water loss
• why is the upper epidermis layer transparent?

  light can pass through easily
• what does the palisade layer have a lot of?

  chloroplasts which is were photosynethesis occurs
• What is a feature of epidermal cells?

  translucent so light is allowed through
• What does the epidermis have?

  many stomata and surrounded by guard cells
• What does the palisade cells have?

  chloroplasts
• The spongy mesophyll layer is spaced further apart to allow gas exchange for photosynthesis and respiration
• What do guard cells do?

  control the stomata to be open or closed
• What happens when the guard cells are open?

  allows gas exchange and water vapour out
• What are meristem tissues made of?

  dividing cells
• Where are meristem tissue found?

  roots and shoots
• What is the order of the leaf layers?


  cuticle layer

  upper epidermis

  palisade layer

  spongy layer

  lower epidermis

  stomata