Question

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

• A. thick secondary walls
• B. pores on lateral walls
• C. presence of P-protein
• D. enucleate condition

Answer 1

Answer: (B)

pores on lateral walls

Answer 2

Both vessel elements in xylem and sieve tube elements in phloem have pores on their lateral walls. These pores facilitate the movement of water and nutrients through these cells. Vessel elements have pits, and sieve tube elements have sieve plates with pores to allow for transport.

So, the correct option is (B): pores on lateral walls.