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31 Cards in this Set
- Front
- Back
angiosperm
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a flowering plant; the seeds are borne within a fruit
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conifer
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one of four groups of gymnosperm plants; cone-bearing trees that include pine, cedar, and spruce
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dicotyledon
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a flowering plant group' members show twoembryonic leaves, net-veined leaves, cylindrical arrangement of cascular bundles, and other characteristics
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fruit
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a flowering plant structure consisting of one of more ripened ovaries that usually contain seeds
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gymnosperm
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a vascular plant producing naked seeds as in conifers
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herbaceous plants
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a plant that lacks persistant woody tissue
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monocotyledon
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a flowering plant group; members show one embryonic leaf, parallel-veined leaves, scattered cascular bundles, and other characteristics
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phloem
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the vascular tissue that conducts organic solutes in plants; it contains sieve-tube cells and companion cells
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pollen grain
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a microgametophyte inseed plants
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pollination
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in seed plants, the trasfer of pollen from microsprangium to the ovule, which my this time contains a megagametophyte
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woddy plant
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a plant that contains wood; usually trees such as evergreen trees (gymnosperms) and flowering trees (angiosperms). Alternative is a herbaceous plant
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xylem
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the vascular tissue that transports water and mineral solutes upward through the plant body; it contains vessel elements and tracheids
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Casparian Strip
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a layer of impermeable lignin and suberin bordering four sides of root endodermal cells; prevents water and solute transport between adjacent cells
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cork cambium
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a lateral meristem that produces cork
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cotyledon
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seed leaf for embryonic plant, providing nutrient molecules for the developing plant before its mature leaves begin to photosynthesisize
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cuticle
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a waxy layer covering the epidermis of plants that protects the plant against water loss and disease causeing organisms
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endodermis
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internal plant root tissue forming a boundary between the cortex and the vascular cylender
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epidermis
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covering tissue of plant roots and leavesand also stems of nonwoddy organisms
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mesophyll
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inner, thickes later of a leaf consisting of palisade and spongy mesophyll; the site of most photosynthesis
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rhizome
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a rootlike, underground system
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root hair
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an extrension of a root epidermal cell that collectively increases the surface area for the absorptionof water and minerals
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stolon
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a stem that grows horizontally along the ground and establishes planlets periodically when it contacts the soil
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guard cell
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a type of plant cell that is found in pairs, with one on each side of a leaf stmate; changes in the turgor pressure of these cells regulate the size an passage of gases through the stomate
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mycorrhiza
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a symbiotic relationship in which a fungus grows around and into a plant root; it assists in the uptake of minerals by the plant and recieves organic nutrients from the plant
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nodule
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a structure on plant roots that contains nitrogen fixing bacteria
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transpiration
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a plant's loss of water to the atmosphere, mainly through evaporationat leaf stomates
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circadian rythm
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a biological rythm with a 24-hour cycle
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gravitropism
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diretional growth of plants in response to earth's gravity; roots demonstrate positive gravitropism, and stems demonstrate negative gravitropism
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phototropism
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the relative lengths of daylight and darkness that affect the physiology and behavior of an organism
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hybridization
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the crossing of different varieties of species
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seed
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a mature ovule that ocnatins an embryo, with stored food enclosed in a protective coat
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