Plants
About this set
Created by:
donjmartinez on April 12, 2011
Subjects:
life science, chapter 8, 7th grade
Description:
The Plant Kingdom
Plants Without Seeds
The Characteristics of Seed Plants
Gymnosperms and Angiosperms
Plant Response and Growth
Classes:
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45 terms
Terms | Definitions |
|---|---|
 cuticle | The waxy, waterproof layer that covers the leaves and stems of most plants. |
| vascular tissue | The internal transporting tissue in some plants that is made up of tubelike structures. |
| zygote | A fertilized egg. |
| nonvascular plant | A low-growing plant that lacks true vascular tissue. |
| vascular plant | A plant that has true vascular tissue. |
| sporophyte | The stage in the life cycle of a plant in which the plant produces spores. |
| gametophyte | The stage in the life cycle of a plant in which the plant produces gametes, or sex cells. |
| rhizoid | A thin, rootlike structure that anchors a moss and absorbs water and nutrients for the plant. |
| frond | The leaf of a fern plant. |
| phloem | The vascular tissue through which food moves in some plants. |
| xylem | The vascular tissue through which water and nutrients move in some plants. |
| pollen | Tiny particles (male gametophytes) produced by seed plants that contain the cells that later become sperm cells. |
| seed | The plant structure that contains a young plant inside a protective covering. |
| embryo | The young organism that develops from a zygote. |
| cotyledon | A seed leaf; sometimes stores food. |
| germination | The sprouting of the embryo out of a seed; occurs when the embryo resumes its growth. |
| root cap | A structure that covers the tip of a root, protecting the root from injury. |
| cambium | A layer of cells in a plant that produces new phloem and xylem cells. |
| transpiration | The process by which water is lost through a plant's leaves. |
| gymnosperm | A plant that produces seeds that are not enclosed by a protective fruit. |
| cone | The reproductive structure of a gymnosperm. |
| ovule | A plant structure in seed plants that produces the female gametophyte; contains an egg cell. |
| pollination | The transfer of pollen from male reproductive structures to female reproductive structures in plants. |
| angiosperm | A flowering plant that produces seeds enclosed in a protective structure. |
| flower | The reproductive structure of an angiosperm. |
| sepal | A leaflike structure that encloses the bud of a flower. |
| petal | A colorful, leaflike structure of some flowers. |
| stamen | The male reproductive part of a flower. |
| pistil | The female reproductive part of a flower. |
| ovary | A flower structure that encloses and protects ovules and seeds as they develop. |
| fruit | The ripened ovary and other structures of an angiosperm that enclose one or more seeds. |
| monocot | An angiosperm that has only one seed leaf. |
| dicot | An angiosperm that has two seed leaves. |
| tropism | The growth response of a plant toward or away from a stimulus. |
| hormone | A chemical that affects growth and development. |
| auxin | A plant hormone that speeds up the rate of growth of plant cells. |
| photoperiodism | A plant's response to seasonal changes in length of night and day. |
| short-day plant | A plant that flowers when the nights are longer than the plant's critical night length. |
| long-day plant | A plant that flowers when the nights are shorter than the plant's critical night length. |
| critical night length | The number of hours of darkness that determines whether or not a plant will flower. |
| day-neutral plant | A plant with a flowering cycle that is not sensitive to periods of light and dark. |
| dormancy | A period when an organism's growth or activity stops. |
| annual | A flowering plant that completes its life cycle in one growing season. |
| biennial | A flowering plant that completes its life cycle in two years. |
| perennial | A flowering plant that lives for more than two years. |
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