The Pitted End Walls of Sieve Elements are Called ____

Question

The pitted end walls of sieve elements are called ____.  
A) plasmodesmata
B) sieve tubes
C) companion cells
D) perforation plates
E) sieve plates

Accepted Answer

The pitted end walls of sieve elements are called sieve plates. Plasmodesmata are channels connecting plant cells, sieve tubes are rows of sieve elements in phloem, companion cells are non-conducting cells associated with sieve elements, and perforation plates are found in vessel elements in xylem.