Section 3 : Plant Nutrition and Transport

• Epidermis/Waxy Cuticle : Transparent which allows light to reach palisade cells
• Palisade Cells : Packed with chloroplasts to allow photosynthesis process. They are arranged closely together so a lot of light energy can be absorbed. Found near the surface (upper)
• Mesophyll Layer : Contains air spaces for diffusion between oxygen and CO2. Contains the vascular bundle composed of xylem and phloem for transportation.
• Lower Epidermis : Contains guard cells and stomata.
• Stomata - Pores underneath a leaf that allow gases to enter and leave. Their opening and closing is controlled by guard cells.
• Mineral = Naturally occurring inorganic substance
• How does plants receive its fundamental ions?


  They are obtained via soil by root hair cells
• What are plants 2 fundamental ions needed for photosynthesis?

  Magnesium(2+) and Nitrogen(3-)
• What happens when plants dont receive its fundamental ions?


  They do not photosynthesise and grow properly.
• What does photosynthesis provide?


  Carbohydrates
• Purpose and function of Magnesium(2+)?

  Make chlorophyll. Chlorophyll is needed for light absorption during photosynthesis
• What is the purpose and function of Nitrogen(3-)?

  Make amino acids. Amino acids are needed for plant growth
• Deficiency symptom of Magnesium(2+)?

  Chlorosis (Yellow veins)
• Full Nutrients = Healthy Growth