Exarch primary xylem is found in ........
Root
Stem
Leaf
All given
A fibre derived from a tracheid is
Collenchymatous tissue is found in
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 $B$
Bordered pits are very common in
Give differences: Tracheids and Vessels