The companion cells are specialized ........ which are closely associated with sieve tube elements.
Collenchymatous cells.
Parenchymatous cells
Sclereids
Fibers
What is correct for schlerenchyma tissue
Exarch' is the condition of vascular bundles in which
Pith is a central part of the ground
An angiosperm differs from a gymnosperm by possessing
Which of the following elements has its end walls perforated