Question

Which cell does not have a perforated cell wall?
A. Tracheids
B. Vessels
C. Sieve tubes
D. None of the above.

Answer 1

Hint:These are elongated cells present in the xylem part of vascular plants that function in the transportation of water and mineral salts to the different parts of the plant. It develops a thick lignified cell wall, and at maturity the protoplast has digested and disappeared.

Complete answer:
To answer this question, first, we need to know about the perforated cell wall. Perforated cell walls mean it is a cell with holes in it. In a biological cell, the holes are in the cell membrane/cell wall, which will lead to its lysis (breaking apart/popping).
Now, let us find the solution from the option.
>Tracheids have pits on their walls. Tracheids, unlike vessel elements, do not have perforations. All tracheary elements develop a thick lignified cell wall, and at maturity the protoplast has broken down and disappeared.
>Vessels are interlinked via holes in their common walls. The vessel like phloem and xylem filter tubes are attached point to point to carry food and water respectively to long distances in a plant. Their end plates are perforated to allow easy passage of substances from one vessel (in case of xylem) and sieve tubes (in case of phloem). So, we can say that vessels have perforated cell walls.
>Sieve tubes have penetrated end walls to form sieve plates.

Thus, the correct answer is option A. i.e. Tracheids.

Note:Do not confuse between xylem vessel and tracheid. Tracheid has pits in their cell that does not mean they have pores in their cell wall. Vessels are composed of vessel elements that contain the main portion of the mineral/ water carrying organelle in those plants where they present