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Why plants need physical defences

Why plants need physical defences

A pathogen is a microorganism that causes communicable disease, while a host is an organism in or on which it lives and reproduces. Plants cannot use circulating white blood cells or antibodies to hunt down pathogens inside their tissues.

6.3.5 Physical plant defence responses Lesson

  1. GCSE
  2. /Biology
  3. /6.3.5 Physical plant defence responses

Step-by-step lessons on OCR GCSE Biology 6.3.5 Physical plant defence responses. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.

Lessons