plant defenses against predators by: jordan dinardo and kimmi tamashiro
TRANSCRIPT
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Plant Defenses against Predators
By: Jordan DiNardo and Kimmi Tamashiro
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Types of Defenses Chemical Defenses
Mechanical Defenses
Mimicry and Camouflage
Indirect Defenses
Leaf shedding and color
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Chemical Defenses•Plant release chemicals that play a major role in defenses against herbivores. • Qualitative
metabolites• Quantitative
metabolites
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Mechanical Defenses•External structural defenses that protect plants from herbivores• Wax covering the
epidermis of the plant• Production of sap• Sharp spines or trichome
covering the plant•Thigmonasty
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Mimicry and Camouflage
•Some plants mimic the presence of insect eggs on their leaves, dissuading species from laying their eggs there.
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Indirect Defenses•When attacked by chemicals, plants give off a chemical that contains an abnormal ratio of volatiles. •Plants also provide housing and food items for natural enemies of herbivores, which protect them. This process is called a “biotic” defense mechanism.
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Leaf Shedding and Color
•Leaf shedding is a form of response that provides protection against diseases and certain pests to the plant.