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30 terms

From Bacteria to Plants - Chapter 5

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phloem
the vascular tissue through which food moves in some plants (141)
xylem
the vascular tissue through which water and nutrients move in some plants (141)
stomata
the small openings on the undersides of most leaves through which oxygen and carbon dioxide can move (144)
embryo
the young plant that develops from a zygote (142)
cotyledon
a seed leaf that stores food (142)
germination
the early growth stage of the embryo plant in a seed (144)
root cap
a structure that covers the tip of a root, protecting the root from injury (149)
transpiration
the process by which water is lost through a plant's leaves (146)
cambium
the layer of cells in a plant that produces new phloem and xylem cells (147)
seed
the plant structure that contains a young plant inside a protective covering (142)
gymnosperm
a plant that produces seeds that are not enclosed by a protective covering (150)
cone
the reproductive structure of a gymnosperm (152)
pollen
tiny particles produced by plants that contain the microscopic cells that later become sperm cells (152)
ovule
a plant structure in seed plants that contains an egg cell (153)
pollination
the transfer of pollen from male reproductive structures to female reproductive structures in plants (153)
angiosperm
a plant that produces seeds that are enclosed in a protective structure (156)
ovary
a protective structure in plants that encloses the developing seeds (157)
flower
the reproductive structure of an angiosperm (157)
petal
the colorful, leaflike structures of a flower (157)
sepal
a leaflike structure that encloses the bud of a flower (158)
stamen
the male reproductive parts of a flower (158)
pistil
the female reproductive parts of a flower (158)
fruit
the ripened ovary and other structures that enclose one or more seeds of an angiosperm (159)
monocot
an angiosperm that has only one seed leaf (157)
dicot
an angiosperm that has two seed leaves (157)
tropism
the growth response of a plant toward or away from a stimulus (164)
hormone
a chemical that affects growth and development (165)
auxin
the plant hormone that speeds up the rate of growth of plant cells (165)
genetic engineering
the process of altering an organism's genetic material to produce an organism with qualities that people find useful (169)
hydroponics
the method of growing plants in a solution of nutrients instead of in soil (170)