Nucleus is absent in

Exarch primary xylem is found in ........

The first formed primary phloem referred as...$A$... The later formed primary pholem is referred as ...$B$...

Choose the correct combinations of $A$ and $B$

Which of the following is true for endarch type of primary xylem?

Mechanical tissue consisting of living cells is

Which one of the following statements pertaining to plant structure is correct