Biology-B3-Plant Defences 0.0 / 5 ? BiologyPlant DefencesGCSEAQA Created by: tonisha_Created on: 26-06-22 19:18 What three defences do plants have? physical chemical mechanical 1 of 16 What are the three physical barriers of a plant? cellulose cell wall waxy cuticle bark 2 of 16 How does a cellulose cell wall protect a plant? difficult for microorganisms from penetrating 3 of 16 How does a waxy cuticle on a leaf protect the plant difficult for microorganisms to penetrate 4 of 16 Bark contains a chemical called what? lignin 5 of 16 This does what to the bark? strengthens it 6 of 16 How does this protect the plant? difficult for microorganisms to penetrate 7 of 16 What are the two chemical defences antibacterial chemicals poisons 8 of 16 How does releasing antibacterial chemicals protect a plant? kills the bacteria 9 of 16 How does releasing poisons protect the plant? to deter herbivores 10 of 16 What are the four mechanical defences? thorns hairs drooping leaves mimicry 11 of 16 How does a thorn protect a plant? it is sharp 12 of 16 How do hairs protect a plant? irritates the herbivores mouth 13 of 16 This makes it difficult to? eat 14 of 16 How do droopy leaves protect a plant? scares herbivores 15 of 16 How does mimicry protect a plant? look like other dangerous plants 16 of 16
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