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23 Cards in this Set
- Front
- Back
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Apoplastic path way
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Plant absorbs between cells and cell walls
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Symplastic path way
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Plant absorbs through cell to cell continuous cytoplasm.
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Stomatal regulation
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Guard cells control pore size. Controls amount of water loss and CO2 intake
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Guard cells
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Respond to light, water, CO2, circadian rhythms. More K more water.
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Source
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Sites of Photosynthesis
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Sink
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Site of sugar use or storage
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Sugar transportation in phloem powered by?
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Positive pressure, due to high sugar concentrations to low concentrations.
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Water transportation in Xylem powered by?
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Negative pressure, by tension of the water evaporation.
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Plant nutrients absorbed by?
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Root hairs.
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Nitrogen absorbed in the form of?
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NO3 (Nitrate) and (Ammonium) NH4
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Most limiting nutrient for plants?
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Nitrogen.
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Nitrogen needed for?
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Making amino acids and Protein.
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Nitrogen cycle involves?
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Bacteria.
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Rhizobium bacteria are?
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Mutualistic.
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Rhizobium do?
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Colonize roots, penetrate root cortex, colony forms and makes root cells to grow and give plant nitrogen and they get sugar.
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Mycorrhizae
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Plant root/fungus mutualism.
Fungus increases surface area. Provide plant with minerals it can't absorb. |
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Mycorrhizae come in two forms and they are?
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Ectomycorrhizae and Arbuscular
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Ectomycorrhizae are found on?
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The mantle on root surface. Less common and on woody species.
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Arbuscular are found on?
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Root cells. They penetrate them. and are most common.
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Epiphytes plants are?
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Non parasitic but survive of the surface of another plant.
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Parasitic plants penetrate host with?
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Haustoria
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Parasitic plants get nutrients by?
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Taping into the xylem and phloem of another plant.
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Carnivorous plants eat because?
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They live in very nitrogen poor soil and eat insects to get nitrogen.
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