Definition of sieve cell in English:

sieve cell


  • A sieve element of a primitive type present in ferns and gymnosperms, with narrow pores and no sieve plate.

    • ‘Vessel elements, tracheids, fibres, sieve tube elements, sieve cells, and parenchyma cells are the major components of vascular tissue.’
    • ‘Sieve tubes and sieve cells both lose their nuclei when they become functional as conduits for photosynthates.’
    • ‘These are the sieve cells, through which the nutrients are transported, and the companion cells.’
    • ‘Sieve tube members occur in angiosperms, while sieve cells are found in other vascular plants.’
    • ‘When coupled with a thick layer of cuticle or bark, the self-sealing mechanisms of sieve cells apparently protect phloem sap from most herbivores.’