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Plants

Unit 7

TermDefinition
cuticle waxy layer that holds in moisture
roots the part of a plant that attaches it to the ground or to a support, typically underground
stem the main body or stalk of a plant or shrub
stomata pores in the cuticle of the plant through which gass exchange occurs
pollen the sperm of a seed plant
leaves main organs of photosynthesis and transpiration
collenchyma elongated cells with with unevenly thick walls for supportive tissue in the plant
photoperiodism response of an organism to changes in length of day
dermal tissue tissue system that covers outside of plants and animals
vascular tissue supportive and conductive tissue in plants consisting of xylem and phloem
xylem tissue that transports water and dissolved minerals in vascular plants
phloem tissue that transports sugars in vascular plants
root cap mass of cells that covers and protects the tips of plant roots
root apical meristem a specialized section of plant tissue characterized by cell division and growth
root hairs thin, hair like outgrowth of an epidermal cell of a plant root that absorbs water and minerals from the soil
nonvascular plants without a vascular system, possess simpler tissues that are specialized for internal transport of water
angiosperms seeding plant whose embryos are enclosed by fruit
seeds structure used by some land plants to store and protect the embryo
endosperm tissue of seeds within flowering plants that nourish an embryo
seed coat the protective outer coat of a seed
fruit The ripened ovaries of the plant and also the usually edible reproductive body of a seed plant
evergreen denoting a plant that retains green leaves throughout the year often contrasted with deciduous
decidious trees/plants whose leaves fall off in autum
sclerenchyma strengthening tissue in a plant, formed from cells with thickened, walls
biennials flowering plant that takes two years to complete its biological lifecycle
sepals each of the parts of the calyx of a flower, enclosing the petals and typically green and leaflike
petals each of the segments of the corolla of a flower, which are modified leaves and are typically colored
pistil female organs of a flower, comprising the stigma, style, and ovary
stigma the top part in the center of a flower which receives the pollen
ovary part of the female reproductive organ of the flower part of the pistil which holds the ovule(s) and is located above or below or at the point of connection with the base of the petals and sepals
stamen the male fertilizing organ of a flower, typically consisting of a pollen-containing anther and a filament.
anther the part of a flower that contains pollen
succulents having thick, heavy leaves or stems that store water
phototropism the growth of organisms in response to light
gravitropism turning or growth movement by a plant
thigmotropism a movement in which a plant moves or grows in response to touch or contact stimuli
transpiration the process of water movement through a plant and its evaporation from aerial parts, such as from leaves but also from stems and flowers
perennials a plant that is present at all seasons of the year
gymnosperm a plant that has seeds unprotected by an ovary or fruit
annuals a plant that completes its life cycle, from germination to the production of seed, within one year, and then dies
Created by: 18verheb