Plant defences

• Name 2 physical defences plants have

  • Waxy cuticles
  • Cell walls
• What is the function of waxy cuticles

  • Stops pathogens from entering
  • Prevents pests from damaging plant
  • Stops water from collecting on leaves (waterproof) -> stops spread of pathogens through water
• What are cell walls made of

  Cellulose
• What are antiseptics 


  • Prevents + stops diseases
  • Can kill bacteria + fungi
  • Prevents infections
  • Works on multiple types of pathogens
• What is a pest repellent

  Stops pests from feeding on plant
• What are some of the chemicals produced by plants used for

  DRUGS to treat human disease or relieve symptoms of disease
• What is quinine used to treat

  Malaria
• What is aspirin used to treat 


  Fevers + pain
• Where does quinine come from

  Bark of cinchona tree
• Where does aspirin come from

  Willow trees