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14 Cards in this Set
- Front
- Back
nitrogen fixation
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process by which certain bacteria convert nitrogen gas to ammonia
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legume
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member of a group of plants that house their own nitrogen-fixing bacteria
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root nodule
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lump on a plant root that contains nitrogen-fixing bacteria.
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root hair
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outgrowth of a root's epidermal cell that increases the surface area available for absorption.
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root pressure
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force that helps push water up the xylem in a plant
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endodermis
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layer of cells surrounding a plants vascular tissue
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transpiration
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evaporation of water from a plants leaves
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tracheid
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long cell with tapered ends that transport water in the xylem
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vessel element
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short wide cell that transports water in the xylem of a plant
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guard cell
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one of a pair of cells that open and close the stoma of a plant by changing shape, allowing gas to exchange with the surrounding air.
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sieve-tube member
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one of a chain of cells that forms the sieve-tube which phloem sap flows in a plant.
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companion cell
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cell found alongside a sieve tube in a plant that may provide resources to the sieve-tube members.
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pressure-flow mechanism
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process by which phloem sap moves through a plant
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epiphyte
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plant that grows on another plant and absorbs nutrients through rain that falls on its leaves.
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