modern biology ch. 28
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Created by:
petefolzenlogen on January 29, 2012
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31 terms
Terms | Definitions |
|---|---|
cuticle | Waxy, protective layer that covers the stems, leaves, and flowers of many plants. Helps prevent water loss. |
spore | A reproductive cell with a hard, protective coating |
seed | the plant structure that contains a young plant inside a protective covering |
vascular tissue | Plant tissue consisting of cells joined into tubes that transport water and nutrients throughout the plant body. |
xylem | Nonliving vascular tissue that carries water and dissolved minerals from the roots of a plant to its leaves |
phloem | vascular tissue responsible for the transport of nutrients and the carbohydrates produced by photosynthesis |
nonvascular plants | plants that do not have true vascular tissue, true roots, stems, or leaves. |
vascular plants | plants that have vascular tissue, true roots, stems, and leaves |
seed plats | plants that produce seeds for reproduction |
gymnosperms | include pine trees, seed plants that produce seeds that are not enclosed in fruits |
angiosperms | flowering plants, seed plants that produce seeds within a protective fruit. |
sporophyte | the first phase of a plant's life cycle, plant that produces spores |
gametophyte | second phase of a plant's life, plants that produce egg ans sperm |
alternation of generations | a life cycle that alternates between the gametophyte phase and sporophyte phase |
bryophytes | the three phyla of nonvascular plants |
liverworts | unusual looking plants that grow in moist, shady areas |
hornworts | grow in moist, shaded areas |
strobilus | a cluster of sporangia-bearing modified leaves. |
rhizome | a underground stem system for ferns |
fiddleheads | the tightly coiled new rings of a fern |
fronds | uncoiled, developed fern leaves |
germinates | when a seed sprouts |
seedling | the embryo begins to grow in a plant |
deciduous | trees that loose their leaves at the end of the growing season |
ovary | the female part of the flower that encloses the egg |
cotyledons | seed leaves in a plants embryo |
monocots | angiosperms that have only one seed leaf |
dicots | angiosperms that have two seed leaves |
veins | bundles of vascular tissue |
parallel venation | veins that run parallel |
net venation | veins that branch repeatedly off of other veins |
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