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45 terms

Section 8 Plants

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cuticle
The waxy, waterproof layer that covers the leaves and stems of most plants
vascular tissue
The internal transporting tissue in some plants that is made up of tubelike structures
zygote
A fertilized egg, produced by a joining of a sperm and egg.
nonvascular plant
A low growing plant that lacks true vascular tissue
vascular plant
A plant that has true vasculaur tissue
sporophyte
The stage in the life cycle of a plant in which the plant produces spores
gametophyte
The stage in the life cycle of a plant in which the plant produces gametes, or sex cells
rhizoid
A thin, rootlike structure that anchors a moss and absorbs water and nutrients
frond
The leaf of a fern plant
phloem
The vascular tissue through which food moves in some plants
xylem
The vascular tissue through which water and nutrients move in some plants
pollen
Tiny particles produced by seed plants that contain the cells that later become sperm cells
seed
The plant structure that contains a young plant inside a protcetive covering
embryo
A young organism that develops from a zygote
cotyledon
A seed leaf
germination
The sprouting of the embryo from a seed that when the embryo resumes growth
root cap
A structure that covers the tip of a root, protecting the root from injury.
cambium
A layerof cells in a plant that produces
transpiration
The process by which water is lost through a plant's leaves
gymnosperm
A plant that produces seeds that are not enclosed by a protective fruit
cone
The reproductive strucure of a gymnodpore
ovule
A structure that contains an egg cell
pollination
The transfer of pollen from male reproductive structures to female reproductive structures
angiosperm
A flowering plant that produces seeds enclosed in a protective structure
flower
The reproductive structure of an angiosperm
sepal
A leaflike structure that encloses the bud of a flower
petal
A colorful, leaflike structure of some flowers
stamen
A male reproductive part of a flower
pistil
The female reproductive part of a flower
ovary
A flower structure that encloses and protects ovules and seeds as they develop
fruit
The ripened ovary and other structures of a angiosperm that enclose one or more seeds
monocot
An angiosperm with one seed leaf
dicot
Anangiosperm that has two seed leaves
tropism
The growth repsonse of a plant towards or away from a stimulus
hormone
A chemical in an organism that produces a specific effect such as growth pr development
auxin
A plant hormone that speeds up the rate of growth of plant cells
photoperiodism
A plant's reponse to seasonal changes in length of night and day
short-day plant
A plant that flowers when the night's are longer than the critical night length
long-day plant
A plant that flowers when the nights are shorter that the plant's critical night length
critical night length
The number of hours of darkness that determines whether or not a plant will flower
day-neutral plant
A PLANT WITH a flowering cycle that is not sensitive to periods of light and dark
dormancy
A period where an organism's growth or activity stops
annual
A flowering plant that completes it's life cycle in one growing season
biennal
A flowering plant that completes it's life cycle in two years
periennial
A flowering plant that lives for more than two years