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A-Level Biology OCR A

Attacked Vocs Examples Produce Aphids Describe Plants Releasing

Four examples of plants releasing VOCs/pheromones in response to herbivory include maple trees releasing pheromones to protect leaves, cabbages attracting parasitic wasps, apple trees attracting predatory mites, and wheat seedlings repelling aphids.

Quatre exemples de plantes libérant des COV/phéromones en réponse à l'herbivorie incluent les érables libérant des phéromones pour protéger les feuilles, les choux attirant des guêpes parasites, les pommiers attirant des acariens prédateurs et les jeunes pousses de blé repoussant d'autres pucerons.

Front Describe 4 examples of plants releasing VOCs/pheromones in response to herbivory.
Back Examples of pheromones/VOCs:
  • When maple tree attacked by insects, it releases pheromone that causes leaves on other branches to make callose (protects from attack)
  • When cabbages are attacked by caterpillars, they produce VOCs attracting parasitic wasps which kill the catterpillars
  • When apple trees are attacked by mites, they release VOCs which attract predatory mites to come and destroy pests
  • Some wheat seedling produce VOCs when attacked by aphids to repel other aphids from plant

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