Plant defences against disease
I can describe physical, chemical and mechanical plant defences against pathogens and pests.
Plant defences against disease
I can describe physical, chemical and mechanical plant defences against pathogens and pests.
Lesson details
Key learning points
- Plants can be infected by pathogens, such as viruses, bacteria and fungi, that cause diseases.
- Pests, including insects, can damage plants by feeding on them, and can spread pathogens that cause diseases.
- Plants have physical, chemical and mechanical defences against pathogens.
- Examples of physical, chemical and mechanical defences in plants.
Common misconception
Plants have no defence against pests or pathogens.
Plants have physical, chemical and mechanical defences against pathogens.
Keywords
Pathogen - A virus, bacterium or other microorganism that causes disease.
Pest - An insect or other animal that damages plants and can spread plant pathogens.
Waxy cuticle - Waterproof coating on the surface of a leaf.
Cell wall - Structure made of cellulose that surrounds plant cells.
Antimicrobial - A substance that kills microorganisms or stops their growth.
Equipment
None required.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
cell wall
cell membrane
chloroplast
vacuole
Exit quiz
6 Questions
virus
bacteria
fungus