The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or…
The annular and spirally thickened conducting elements generally develop in the protoxylem when the root or stem is -
Differentiating
Maturing
Elongating
Widening
Solution
After the growth of the conducting elements in xylem has stopped, secondary wall materials are deposited on these cells. These thickenings are in the form of various shapes such as annular and spiral. This happens when the xylem components are maturing.
