| 词汇 | sclerenchyma |
| 释义 | BETA Examples of sclerenchymasclerenchyma isn’t in the Cambridge Dictionary yet. You can help! The upper and lower mesophyll cells surrounding the gall chamber began to differentiate as sclerenchyma. The hard fibers from agave leaves are actually bundles of individual sclerenchyma fibers that are usually associated with vascular bundles of the leaf. They are composed of many individual sclerenchyma fibers, each of which has primary cell walls of cellulose and hemicellulose and secondary cell walls that are heavily lignified. It is the hard, thick walls that make sclerenchyma cells important strengthening and supporting elements in plant parts that have ceased elongation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sclerenchyma cells have thick lignified secondary walls and often die when mature. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sclerenchyma cells are typically dead at functional maturity, and the cytoplasm is missing, leaving an empty central cavity. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sclerenchyma fibres are of great economical importance, since they constitute the source material for many fabrics (flax, hemp, jute, ramie). From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Their bast fibers have typically abundant, long and slender trichosclereids, merging with the fibers of the sclerenchyma. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They are small bundles of sclerenchyma tissue in plants that form durable layers, such as the cores of apples and the gritty texture of pears. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Sclerenchyma cells are the principal supporting cells in plant tissues that have ceased elongation. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Unlike the collenchyma, mature sclerenchyma is composed of dead cells with extremely thick cell walls (secondary walls) that make up to 90% of the whole cell volume. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Composed of parenchyma, collenchyma and sclerenchyma cells. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. |
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