The first formed primary phloem is referred as ...$A$... The later formed primary phloem is referred as ...$B$...
Choose the correct combination of $A$ and $B$
$A-$ protoxylem; $B-$ metaxylem
$A-$ protophloem; $B-$ sieve tube cells
$A-$ metaphloem; $B-$ sieve tube cells
$A-$ protophloem; $B-$ metaphloem
Identify from the following, a plant tissue in which lignin does not occur in the cell walls?
Delete odd one
The central lumens are obliterated in
What is the shape of a typical parenchyma cell