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Lecture 11

Lec11 - Plant Defense.doc

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Department
Biological Sciences
Course
BIOA02H3
Professor
Mary Olaveson
Semester
Winter

Description
Plant Defence Slide Oneplant defence Plants feed the world but they do not want toPlant defence mechanismsArms race between plants and herbivores Slide Twoplants feed the worldAll nonplants depend directly or indirectly on plant foodEvery plant is under constant threat of attack herbivory Slide ThreeherbivoryMost widespread plantanimal interactionOften least visible o Especially insects are feeding on plants day and life Slide FourcaterpillarsStarts as an egg on the leafInside the leaf it feeds away from predatorsOnce an adult it leaves the leaf Slide Fivemolluscs Slide SixreptilesTurtlesDinosaurs Slide SevenNinemammals of all sizes Slide Tenplant defencePlant defence mechanisms Slide Elevenplants dont want to get eatenTwo main mechanisms of defence
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