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Plant Defense

Plant Defense. Resource: http://www.morning-earth.org/Graphic-E/BIOSPHERE/Bios-C-PlantsDefense.html. Plant Defense. Plants are tough survivors. They have successfully defended themselves against attack for hundreds of millions of years. Thorns, Spines, and Micro-Needles.

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Plant Defense

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  1. Plant Defense Resource: http://www.morning-earth.org/Graphic-E/BIOSPHERE/Bios-C-PlantsDefense.html

  2. Plant Defense Plants are tough survivors. They have successfully defended themselves against attack for hundreds of millions of years.

  3. Thorns, Spines, and Micro-Needles • Used to discourage grazers

  4. Cat’s Claw Cholla Cactus spines Gooseberry Spine Leaves Prickly Pear Cactus

  5. Barriers: cuticle, bark and resin • Woody plants have bark • Herbs have waxy cuticles • Both are barriers that resist penetration by virus particles, bacteria, and spores of fungi • Some bark grows to 1 foot thick to resist fire • Resin (sap)

  6. Plant Poisons • Leaves a bad taste • Interfere with digestion • Interfere with nervous system • Can cause death

  7. Plant Poisons Monkshood (called Wolfsbane) in werewolf movies Foxglove (Witches’ Glove or Dead Man’s Bells) Tall Larkspur Deadly Nightshade

  8. Mimicry • Plants mimic the presence of insect eggs on their leaves to discourage insects from laying their eggs there.

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