9. Insectivorus Plants - Lecture 9 Insectivorous Plants I....

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Lecture 9Insectivorous PlantsI.Charles Darwin “Insectivorous Plants”1875II.500 species of plantsA.Nitrogen- poor soilsB.Acid bogsC.Heavy volcanic claysIII.Mechanisms to “trap” insects (attractant)A.Sticky exudates (attractive to insects) - flycatcher, sundew
Insectivorous PlantsB.Modified structures (color or nectar) -pitcher plantsC.Modified leaves (color or nectar-likesubstance) - Venus fly trapIV.Digestion - glands secret enzymatic fluid todigest insects (except exoskeleton)V.Absorb nutrients through plant tissues
SundewPitcher plantVenus fly trap - active trappassive traps
What insects do for a living: phytophagesPhytophagous - feeds on living plants(herbivores)A.Plants are primary producers (autotrophs)B.Insects are consumers (heterotrophs)1.Primary consumers - herbivory(phytophages)2.Secondary or tertiary consumers (predators,parasitoids, parasites)3.Scavengers

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Term
Spring
Professor
Helms
Tags
Microeconomics, beetle, Carnivorous plant, Insectivorous Plants, elm leaf beetle

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