from The Century Dictionary and Cyclopedia
- n. In botany, same as sievecell.
Sorry, no etymologies found.
First sieve-tube cells are short-lived and do not have companion cells.
Water flow sieve-tube boundary - estimating turgor implications phloem loading unloading.
Companion Cells 1) Companion cells are closely connected to sieve-tube cells by numerous plasmodesmata.
Phloem is vascular tissue that conducts the organic solutes in plants, from the leaves to the roots; it contains sieve-tube members and companion cells. a. Sieve-tube Members 1) Sieve-tube cells contain cytoplasm but no nucleus.