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单词 collenchyma
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Examples ofcollenchyma

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The outer cortical cells often acquire irregularly thickened cell walls, and are calledcollenchymacells.
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Collenchymacells are typically quite elongated, and may divide transversely to give a septate appearance.
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Stretchable support (without elastic snap-back) is a good way to describe whatcollenchymadoes.
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Collenchymacells have thin primary walls with some areas of secondary thickening.
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The plant cells which contain chloroplasts are usually parenchyma cells, though chloroplasts can also be found incollenchymatissue.
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In its extended position, the cells of the entirecollenchymaare distended with water.
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The walls ofcollenchymain shaken plants (to mimic the effects of wind etc.), may be 40100% thicker than those not shaken.
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Collenchymacells are usually living, and have only a thick primary cell wall made up of cellulose and pectin.
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Collenchymaprovides extra structural support, particularly in regions of new growth.
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Collenchymatissue makes up things such as the resilient strands in stalks of celery.
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The term was derived from the tissue in which the cells occur:collenchyma.
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The namecollenchymain turn was borrowed from botany because of a fancied, essentially irrelevant, resemblance between sponge tissue and a particular class of ground tissue in plants.
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Unlike thecollenchyma, mature sclerenchyma is composed of dead cells with extremely thick cell walls (secondary walls) that make up to 90% of the whole cell volume.
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Composed of parenchyma,collenchymaand sclerenchyma cells.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.

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更新时间:2024/12/28 1:14:33