Botany
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20 terms
Terms | Definitions |
|---|---|
 abscission | Shedding of flowers and leaves and fruit following formation of scar tissue in a plant |
| abscission layer | Layer of cells between a leaf and stem that is killed by hormones to make the leaf fall off |
| adventitious buds | Buds that form in an unexpected place on a plant such as an internode. |
| angiosperms | Flowering plants which produce seeds in a closed or covered ovary (fruit) |
| apical meristem | Area at the tips of twigs and roots from which new plant growth arises; the highest growing meristem on a plant |
| axillary bud | Bud located in the axil of a leaf |
| bolt | Sudden growth of some herbs or vegetable, in which the plant quickly sends up a flower stalk, blooms and set seed. |
| cambium | The living layer of cells of a woody plant, producing phloem and xylem cells for those layers |
| phloem | Type of living plant tissue responsible for the movement of nutrients through the plant. In trees, located within the cambium layer. |
| xylem | In vascular plants, the internal structure through which water and dissolved nutrients are moved. As a plant grows, old xylem is retained and becomes the woody part of a plant. |
| cotyledon | Embryonic or seed leaf; the first proto-leaf or leaves sprouting out of a seed. Contains the food for the sprouting plant. |
| dicotyledon | Member of the Dicotyledones class; flowering plants with two embryonic leaves per seed. also known as 'dicots' |
| frond | leaf like structure of ferns |
| meristem | Collection or area of undifferentiated plant cells from which new growth arises |
| mitochondria | small structure responsible for power generation in plant cells |
| monocotyledon | Member of the Monocotyledon class; flowering plants with only one embryonic leaf per seed. i.e. grasses.Also known as 'monocots' |
| Nitrogen fixation | Conversion of atmospheric nitrogen into plant available forms by Rhizobia or Frankia bacteria. |
| petiole | The stalk of a leaf, attaching the leaf to a stem |
| stoma (pl:stomata) | Pores on leaves and stems that control gas exchange in plants. |
| transpiration | The giving off of water vapor througha plants leaves of stomata. This causes water to be drawn up through a plant's roots, thereby moving water and nutrients through a plant. |
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