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Audesirk Ch21
Virginia Tech Biology Lipscomb
| Question | Answer |
|---|---|
| alternation of generations | a life cycle, typical of plants, in which a diploid sporophyte (spore-producing) generation alternates with a haploid gametophyte (gamete-producing) generation. |
| angiosperm | a flowering vascular plant. |
| antheridium | a structure in which male sex cells are produced, found in the bryophytes and certain seedless vascular plants. |
| archegonium | a structure in which female sex cells are produced; found in the bryophytes and certain seedless vascular plants |
| bryophyte | a simple nonvascular plant of the division Bryophyta, including mosses and liverworts |
| conifer | a member of a class of tracheophytes (Coniferophyta) that reproduces by means of seeds formed inside cones and that retains its leaves throughout the year |
| cuticle | a waxy or fatty coating on the exposed surfaces of epidermal cells of many land plants, which aids in the retention of water |
| flower | the reproductive structure of an angiosperm plant |
| fruit | in flowering plants, the ripened ovary (plus, in some cases, other parts of the flower), which contains the seeds. |
| gametophyte | the multicellular haploid stage in the life cycle of plants. |
| gymnosperm | a nonflowering seed plant, such as a conifer, cycad, or gingko |
| lignin | a hard material that is embedded in the cell walls of vascular plants and provides support in terrestrial species; an early and important adaptation to terrestrial life |
| ovule | a structure within the ovary of a flower, inside which the female gametophyte develops; after fertilization, develops into the seed |
| pollen | the male gametophyte of a seed plant |
| seed | the reproductive structure of a seed plant; protected by a seed coat; contains an embryonic plant and a supply of food for it |
| sporophyte | the diploid form of a plant that produces haploid, asexual spores through meiosis |
| stomata | an adjustable opening in the epidermis of a leaf, surrounded by a pair of guard cells, that regulates the diffusion of carbon dioxide and water into and out of the leaf. |
| vascular | describing tissues that contain vessels for transporting liquids |
| vessel | a tube of xylem composed of vertically stacked vessel elements with heavily perforated or missing end walls, leaving a continuous, uninterrupted hollow cylinde |
| zygote | in sexual reproduction, a diploid cell (the fertilized egg) formed by the fusion of two haploid gametes |
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hgarcia
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