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30 Cards in this Set

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a special layer of cells at the base of a leaf's petiole that severs the leaf from the stem as the plant prepares for winter
abscission layer
a special petal-like leaf that flows at the base of a flower or on its stalk
bracts
the shell-like fruit covering of a wheat grain
bran
the inedible parts of cereal grains that are separated by threshing or winnowing; same as husk
chaff
the branch of chemistry that seeks to use substances in farm and forest products as raw materials for manufacturing other products
chemurgy
a temporary state of inactivity
dormancy
a tissue which surrounds the developing embryo of a seed and provides food for its growth
endosperm
the union of sex cells (sperm and egg) to form a new organism
fertilization
in botony, a ripened ovary and its contents, together with any other flower parts that may adhere to it
fruit
the sprouting or growth of a spore, seed, or bud
germination
a gray, sticky mixture of several proteins that is found in wheat and other cereal grains; its elastic texture allows bread to rise in the presence of yeast
gluten
an agricultural technician who specializes in growing flowers, fruits, vegetables and shrubs
horticuluturist
() an organism with two different genes for a particular trait; a heterozygous organism; (2) an organism that is a crossbreed between two different species of animals or plants; hybrids within a single kind (such as wolfdogs) are usually fertile, whereas hybrids between different kinds are sterile (such as mules)
hybrid
any arrangement of flowers in a cluster on a stem
inflorescences
a member of the pea family, characterized by dry fruits borne in pods, many are nitrogen-fixing
legume
the sweet-tasting, sugary liquid produced by plants
nectar
the response of an organism to variations in the intensity of light or to varying periods of light and darkness
photoperiodism
the central, vase-shaped structure of a flower that contains the female reproductive organs; consists of the stigma, style, and ovary
pistil
(1) in plants, the enlarged base of a pistil that contains the future seeds (ovules) of the flower;(2) in animals and people, the reproductive organ of the female that produces eggs (ova) and female hormones (estrogen)
ovary
tiny capsules that contain the male reproductive cells (sperm) of a flower
pollen
the transfer of pollen grains from an anther to the stigma portion of a pistil
pollination
leaflike structures attached to the edge of the receptacle of a flower that enclose and protect the flower's petals
sepals
any of the brightly colored leaflike structures that are the most conspicuous part of many flowers
petals
collective term for the petals of a flower
corolla
the production of offspring through the union of male (sperm) and female (egg) sex celss
sexual reproduction
the male reproductive part of a flower, comprising the anther and filament
stamen
the enlarged structure at the tip of a stamen that produces pollen
anther
(1) the slender, elongated stalk of a flower's stamen that supports the anther; (2) a chain of algae or other colonial cells attached end to end
filament
(1) the sticky tip of a flower's pistil; functunes to capture pollen during pollination; (2) a red eyespot in certain algae or protozoa
stigma
in botony, the stalklike part of the pistil of a flower that connects the ovary to the stigma
style