Defences

• Physical defences:

  • Waxy cuticle acts as a barrier to stop pathogens entering
  • Cell walls form a physical barrier against pathogens
  • Have layers of dead cells around their stems, act as a barrier
• Chemical defences:

  • Produce antibacterial chemicals which kill bacteria
  • Produce poisons which deter herbivores
• Mechanical defences:

  • Have thorns or hairs, stop animals from touching or eating them
  • Leaves that drop or curl when touched, prevents themselves from being eaten
  • Mimic other organisms, stopos them from eating them or attacking them