sieve cell


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sieve cell

n.
An elongated, food-conducting cell in phloem characteristic of gymnosperms and ferns, having pores but lacking sieve plates.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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In gymnosperms, a more primitive type of sugar-conducting cell, a sieve cell, performs essentially the same function, although the efficiency of transport is reduced.
Chapter 7: Growth: cells to tissue
In the inner bark of conifers, densely packed sieve cells with minute pores in their walls pass the nutrients slowly from cell to cell.
Bark is beautiful: remarkable for its visual diversity, this biological marvel also protects and nourishes trees, animals and humans. (mother's nature)]

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