Please enable JavaScript.

Coggle requires JavaScript to display documents.

Nutrition in plants - Coggle Diagram

- - - - Temperature dependent as
        enzymes is used
  - - - All available chlorophyll fully utilised in photosynthesis
      - Not enough CO2 in air to be reduced by an increased supply
        of H+ ions
- - - - In light, K+ ions actively accumulated in guard cells
        WP more negative within guard cells
        Water enters guard cells via osmosis
        turgor pressure in guard cell increases
        Guard cells opens
    - - In darkness, K+ ions leave cells
        WP in guard cells less negative
        water leaves guard cells by osmosis
        Turgor pressure in guard cells decreases
        Guard cells Close
  - - - Numerous leaves with large surface area: maximal absorption of light energy
      - Flat lamina
        
        Facilitates inward diffusion of CO2 and allows light to reach all mesophyll cells
      - Petioles holds lamina away from stem
        
        Allows leaf to be in position to absorb maximum light energy
    - - Thick external walls with waxy cuticle
        
        Protects leaf tissue from invasion by fungal parasites and from excessive water loss
    - - Elongated cells, tightly packed together
        numerous chloroplasts
        
        Maximises light energy absorbed by chlorophyll
    - - Large interconnecting air spaces between cells
        
        Facilitates gaseous exchange of carbon dioxide and oxygen
        by diffusion
    - - Small vascular bundles
        
        Supports leaf tissues
      - Contain xylem and phloem
        
        Xylem vessels deliver water
        phloem sieve tubes transport sugars away from leaf