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GCSE Biology Paper 1 (9-1 Exams)

Barrier Pathogens Physical Plant Stems Waxy Cuticle Stop

Plants possess physical defenses such as a waxy cuticle, cellulose cell walls, and layers of dead cells to prevent pathogen entry.

Plants have physical defenses like a waxy cuticle and cellulose cell walls that act as barriers, and dead cell layers to prevent pathogen entry.

Front What are the physical defences that plant have against pathogens?
Back
  • Most plants leaves and stems have a waxy cuticle, which provides a barrier to stop pathogens entering
  • Plant cells are surrounded by cell walls made from cellulose which form a physical barrier against pathogens that make it past the waxy cuticle
  • Plants have layers of dead cells around their stems which act as a barrier to stop pathogens entering.

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