Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A supportive tissue of plants, consisting of elongated living cells with unevenly thickened walls.
from The Century Dictionary.
- noun In botany, a layer of modified parenchyma immediately beneath the epidermis, having the cells thickened at the angles by a pad-like mass which is capable of swelling greatly in water. It is found in the young stems, petioles, and leaf-veins of many dicotyledonous plants.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Bot.) A tissue of vegetable cells which are thickend at the angles and (usually) elongated.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun biology A supporting
ground tissue just under the surface of variousleaf structures formed beforevascular differentiation .
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
Support
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Examples
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Both are embedded in a dense parenchyma tissue (= ground tissue), called pith, with usually some structural collenchyma tissue present.
Wikibooks - Recent changes [en] 196.46.245.35 2010
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They give flexible support to immature regions of plants (e.g., a celery stalk is mostly collenchyma).
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Ground tissue forms the bulk of the plant; it contains parenchyma, collenchyma and sclerenchyma cells.
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They give flexible support to immature regions of plants (e.g., a celery stalk is mostly collenchyma).
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Ground tissue forms the bulk of the plant; it contains parenchyma, collenchyma and sclerenchyma cells.
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Slide 12: F F F F ก 40x xylem parenchyma epidermis collenchyma chlorenchyma
hernesheir commented on the word collenchyma
(n): plant cells, or tissues of composed of such cells in which the primary cell walls are thickened, especially at the corners.
Collenchyma cells possess neither secondary walls nor lignin. They are primarily used as support tissue in growing roots, shoots, leaves, and petioles. The stringy ribs of celery are a familiar example of collenchyma.
January 6, 2009