Definition - What does Sieve Plate mean?
A sieve plate is a perforated wall between the sieve elements in vascular plants. They are the outer end wall of a sieve-tube element, and contain many pores through which nutrients are transported.
MaximumYield explains Sieve Plate
The vascular system is absolutely essential for the life of a plant, as nutrients would not be able to move any further than the roots without it.
The sieve plates assist the movement process through their perforated surface, helping to transport nutrients to the stems and leaves.
The vascular system, including sieve plates, runs throughout the stems or the inner bark of trees to move nutrients upward to support the leaves. A complex series of sieve tubes within the vascular system extends throughout the plant.