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Biology Chapter 22


Alteration of generations (608, 637) life cycle that has two alternating phases 1. a haploid (N) phase 2. a diploid (2N) phase.
sporophyte (637) spore-producing plant; the multicellular diploid phase of a plant life cycle.
Gametophyte (637) gamete-producing plant; multicellular haploid phase of a plant life cycle.
bryophyte (641) group of plants that have specialized reproductive organs but lack vascular tissue: includes mosses and their relatives.
vascular tissue (641) specialized tissue in plants that carries water and nutrients.
archegonium (642) structure in plants that produces egg cells.
antheridium (642) male reproductive structure in some plants that produces sperm.
sporangium (609)(642) spore capsule in which haploid spores are produced by meiosis.
tracheophyte (643) vascular plant.
tracheid (643) hollow plant cell in xylem with thick cell walls strengthened by lignin.
xylem (643) vascular tissue that carries water upward from the roots to every part of the plant.
phloem (643) vascular tissue that transports solutions of nutrients and carbohydrates produced by photosynthesis through the plant.
seed (646) plant embryo and a food supply encased in a protective covering.
gymnosperm (646) group of seed plants that bear their seeds directly on the scales of cones.
angiosperm (646) group of seed plants that bear their seeds within a layer of tissue that protects the seed: also called flowering plant.
pollen grain (647) structure that contains the entire male gametophyte in seed plants.
seed coat (647) tough covering that surrounds a protects the plant embryo and keeps the contents of the seed from drying out.
ovule (648) structure in seed cones in which the female gametophytes develop.
pollen tube (648) structure in a plant that contains two haploid sperm nuclei.
ovary (650) in plants, the structure that surrounds and protects seeds. In animals, the primary female reproductive organ; produces eggs.
fruit (651) structure in angiosperms that contains one or more matured ovaries.
cotyledon (652) first leaf or first pair of leaves produced by the embryo of a seed plant.
monocot (652) angiosperm with one seed leaf in its ovary.
dicot (652) angiosperm with two seed leaves in its ovary.
woody plant (653) type of plant made primarily of cells with thick cell walls that support the plant body: includes trees, shrubs and vines.
herbaceous plant (653) type of plant that has smooth and non-woody stems: includes dandelions, zinnias, petunias and sunflowers.
Created by: Emilee Kincaid