What is the Difference Between Sieve Cells and Sieve-Tube Elements?
While both sieve cells and sieve-tube elements are involved in nutrient transport, there are distinct differences. Sieve cells are found in gymnosperms and have less specialized sieve areas, whereas sieve-tube elements are found in angiosperms and possess more advanced sieve plates. Additionally, sieve-tube elements are closely associated with companion cells, which provide metabolic support and help regulate the function of the sieve-tube elements.