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8 Cards in this Set
- Front
- Back
What is the first line of defense for plants?
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Their dermal tissue.
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What are the steps of a fungal invasion of a plant?
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1. Spores land on leaves. 2. Spores germinate and form adhesion pads. 3. Hyphae grow through the cell walls. 4. Haustoria develop and suck in nutrients.
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What is allelopathy?
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When a chemical signal secreted by the roots of one plant blocks the germination of nearby seeds or the growth of nearby plants.
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What are phytoestrogens?
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Chemicals within plants such as soy that resemble the human hormone estrogen.
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What are some examples of animals protecting plants?
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Ants fight of herbivores of the Acacia tree, and leaves of some plants attract parasitoid wasps when caterpillars try to eat them.
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What is the process of the systemic response to wounding in tomato plants?
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1. Systemin is produced by wounded leaves. 2. The systemin spreads through the plant. 3. Systemin causes production of jasmonic acid. 4. Jasmonic acid causes the production of proteinase inhibitor.
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What is the hypersensitive response (HR)?
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Cells around the source of invasion die to prevent the pathogen's spread and chemical defenses are released.
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What allows a plant to be prepared for future attacks on the plant?
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Systemic Acquired Resistance (SAR).
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