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Symbiotic associations I. Symbiosis A. Definition B. Types of symbiosis 1. commensalism 2. mutualism 3. competition 4. predation and parasitism II. Mycorrhiza.

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Presentation on theme: "Symbiotic associations I. Symbiosis A. Definition B. Types of symbiosis 1. commensalism 2. mutualism 3. competition 4. predation and parasitism II. Mycorrhiza."— Presentation transcript:

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2 Symbiotic associations I. Symbiosis A. Definition B. Types of symbiosis 1. commensalism 2. mutualism 3. competition 4. predation and parasitism II. Mycorrhiza A. Definition B. How fungi grow C. Mycorrhizal types 1. endomycorrhizae a. VA mycorrhizae b. orchid c. ericoid d. monotropoid 2. ectomycorrhizae III. Root nodules: legumes and rhizobium IV. Lichens

3 I. Symbiosis A. Definition B. Types of symbiosis 1. commensalism 2. mutualism 3. competition 4. predation, parasitism, and pathogenicity Symbiosis Symbiont one Symbiont two Example commensalism mutualism competition predation et al +o + = positive benefit - = negative o = no effect ++ - - + - allelopathy + -

4 II. Mycorrhiza A. Definition B. How fungi grow mycorrhiza (fungus-root): relationship between plant roots and fungi mycorrhizae, mycorrhizal hypha, hyphae

5 C. Mycorrhizal types 1. endomycorrhizae a. VA mycorrhizae b. orchid c. ericoid d. monotropoid nitrogen Acid soils

6 2. ectomycorrhizae Amanita chanterelle

7 III. Root nodules: legumes and rhizobium N2N2

8 IV. Lichens crustose foliose fruticose

9 The end

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