Defence of plant diseases

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GCSE Biology Flashcards on Defence of plant diseases, created by Antonia Rout on 22/04/2017.
Antonia Rout
Flashcards by Antonia Rout, updated more than 1 year ago
Antonia Rout
Created by Antonia Rout almost 7 years ago
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Question Answer
Physical defence responses to resist invasion of micro-organisms Cellulose cell walls - prevents entry of micro-organisms/prevents animals eating it. Toguh waxy cuticle on leaves - prevents entry of micro-organisms/prevents animals eating it. Layers of dead cells around stems (bark on trees) which fall off - cells pall off taking pathogens with them.
Chemical plant defence responses Antibacterial chemicals - prevents bacteria growing. Poisons to deter herbivores - put off animals that would eat them.
Mechanical adaptations Thorns and hairs deter animals - put off animals from eating/touching them. Leaves which droop or curl when touched - insects fall off or are scared off. Mimicry to trick animals - leaves look like they already have eggs on them which prevents butterflies laying eggs on the leaf.
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