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Plants
Unit 7
| Term | Definition |
|---|---|
| cuticle | waxy layer that holds in moisture |
| roots | the part of a plant that attaches it to the ground or to a support, typically underground |
| stem | the main body or stalk of a plant or shrub |
| stomata | pores in the cuticle of the plant through which gass exchange occurs |
| pollen | the sperm of a seed plant |
| leaves | main organs of photosynthesis and transpiration |
| collenchyma | elongated cells with with unevenly thick walls for supportive tissue in the plant |
| photoperiodism | response of an organism to changes in length of day |
| dermal tissue | tissue system that covers outside of plants and animals |
| vascular tissue | supportive and conductive tissue in plants consisting of xylem and phloem |
| xylem | tissue that transports water and dissolved minerals in vascular plants |
| phloem | tissue that transports sugars in vascular plants |
| root cap | mass of cells that covers and protects the tips of plant roots |
| root apical meristem | a specialized section of plant tissue characterized by cell division and growth |
| root hairs | thin, hair like outgrowth of an epidermal cell of a plant root that absorbs water and minerals from the soil |
| nonvascular plants | without a vascular system, possess simpler tissues that are specialized for internal transport of water |
| angiosperms | seeding plant whose embryos are enclosed by fruit |
| seeds | structure used by some land plants to store and protect the embryo |
| endosperm | tissue of seeds within flowering plants that nourish an embryo |
| seed coat | the protective outer coat of a seed |
| fruit | The ripened ovaries of the plant and also the usually edible reproductive body of a seed plant |
| evergreen | denoting a plant that retains green leaves throughout the year often contrasted with deciduous |
| decidious | trees/plants whose leaves fall off in autum |
| sclerenchyma | strengthening tissue in a plant, formed from cells with thickened, walls |
| biennials | flowering plant that takes two years to complete its biological lifecycle |
| sepals | each of the parts of the calyx of a flower, enclosing the petals and typically green and leaflike |
| petals | each of the segments of the corolla of a flower, which are modified leaves and are typically colored |
| pistil | female organs of a flower, comprising the stigma, style, and ovary |
| stigma | the top part in the center of a flower which receives the pollen |
| ovary | part of the female reproductive organ of the flower part of the pistil which holds the ovule(s) and is located above or below or at the point of connection with the base of the petals and sepals |
| stamen | the male fertilizing organ of a flower, typically consisting of a pollen-containing anther and a filament. |
| anther | the part of a flower that contains pollen |
| succulents | having thick, heavy leaves or stems that store water |
| phototropism | the growth of organisms in response to light |
| gravitropism | turning or growth movement by a plant |
| thigmotropism | a movement in which a plant moves or grows in response to touch or contact stimuli |
| transpiration | the process of water movement through a plant and its evaporation from aerial parts, such as from leaves but also from stems and flowers |
| perennials | a plant that is present at all seasons of the year |
| gymnosperm | a plant that has seeds unprotected by an ovary or fruit |
| annuals | a plant that completes its life cycle, from germination to the production of seed, within one year, and then dies |
Created by:
18verheb
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