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8 Cards in this Set

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  • Back
What is the first line of defense for plants?
Their dermal tissue.
What are the steps of a fungal invasion of a plant?
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.
What is allelopathy?
When a chemical signal secreted by the roots of one plant blocks the germination of nearby seeds or the growth of nearby plants.
What are phytoestrogens?
Chemicals within plants such as soy that resemble the human hormone estrogen.
What are some examples of animals protecting plants?
Ants fight of herbivores of the Acacia tree, and leaves of some plants attract parasitoid wasps when caterpillars try to eat them.
What is the process of the systemic response to wounding in tomato plants?
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.
What is the hypersensitive response (HR)?
Cells around the source of invasion die to prevent the pathogen's spread and chemical defenses are released.
What allows a plant to be prepared for future attacks on the plant?
Systemic Acquired Resistance (SAR).