释义 |
sieve-tube element Related to sieve-tube element: sieve plate, Vessel elements, Companion cellssieve-tube element or sieve tube element (sĭv′to͞ob′, -tyo͞ob′)n. An elongated, food-conducting cell in the phloem of angiosperms, lacking a nucleus and having a sieve plate at both ends. Also called sieve-tube member. |