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31 Cards in this Set

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