Phloem fibers are made up of .......... tissue.
Sclerenchymal
Parenchymal
Collenchymal
None of them
The interfibrillar material of the secondary wall is chiefly made up of
The vessel elements of angiosperms differ from other elements of xylem in having
Function of storage is performed by
Active division takes place in the cells of
Companion cells in plants are associated with