Sieve cells
From Wikipedia, the free encyclopedia
Sieve cells are long, slender, conducting cells of the secondary phloem, that do not form a constituent element of a sieve tube, but which are provided with relatively unspecialized sieve areas, especially in the tapering ends of the cells that overlap those of other sieve cells. They have a narrower diameter and are more elongated compared to Sieve Tube Members, the other kind of sieve elements present in the phloem. Sieve cells are associated with albuminous cells, which lack starch, thus making it possible to differentiate them from phloem parenchyma.
[edit] See also
[edit] External links
- Comprehensive explanation of sieve elements - University of Hamburg Department of Biology
- Introduction to secondary pholem tissue by Dr. David T. Webb - Universtiy of Hawaii
