A common feature of vessel elements and sieve tube elements is

A common structural feature of vessel elements and sieve tube elements is (a) Enucleate condition (b) Presence of p-protein (c) Thick secondary wall (d) Pores on lateral walls

A common structural feature of vessel elements and sieve tube elements is

A common structural feature of vessel elements and sieve tube elements is

A common structural feature of vessel elements and sieve tube elements is

A common structural feature of vessel elements and sieve tube elements is

A common structural feature of vessel elements and sieve tube elements is'