Plant nutrition 🪴

• The main function of the root system is to absorb water and minerals from the soil.
• Photosynthesis is the process by which plants synthesize carbohydrates from raw materials using energy from the light
• Carbon dioxide + water = glucos + oxygen
• Light intensity affects photosynthetic rate
• Chlorophyll help absorb the light energy from the sun
• Chlorophyll is the green pigment which is found in chloroplast
• Glucose is the sugar in photosynthesis
• Glucose is way to soluble to be transported around the plant so it can be converted into more complex carbohydrate

  • Starch as an energy store
  • Cellulose to build cell walls
  • Used in respiration provide energy
  • Converted into sucrose for transportation in the phloem
  • Nectar to attract insects for pollination
• Minerals required

  • Nitrate ions to build amino acids
  • Magnesium ions for making chlorophyll
• Factors that affect the rate of photosynthesis

  • Light intensity
  • Carbon dioxide concentration
• When you do an experiment to investigate the effect of light and CO2 concentration on the rate of photosynthesis you can measure it by counting the amount of oxygen bubbles produced
• Leafs have a large surface area which helps allow more diffusion of carbon dioxide and more absorbtion of light for photsynthesis
• The leafs is thin which allows  faster diffusion of carbon dioxide to palissad mesopyll cells