Conducting Tubes of Phloem,composed of Stacked Living Cells,are Called ________________

Question

Conducting tubes of phloem,composed of stacked living cells,are called ________________.  
A) vessel elements
B) sieve tubes
C) tracheids
D) sieve elements
E) xylem tubes

Accepted Answer

Sieve tubes are the conducting tubes of phloem, composed of stacked living cells called sieve tube elements.