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Biology Chapter 22
Plants
| Term | Definition |
|---|---|
| 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
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