Concept: Sclerenchyma is a supporting plant tissue composed of dead cells with thick, lignified walls.
Explanation:Sclerenchyma cells are dead at maturity.
Their walls are thickened with lignin and cellulose to provide rigid structural support.
Living plant tissues include parenchyma and collenchyma, so option B is not correct.
Tracheid cells are dead but belong to the xylem, not to sclerenchyma, ruling out option C.
Meristematic cells are living, actively dividing cells, so option D is also incorrect.
Thus, the only correct description of sclerenchyma tissue is that it consists of dead cells.
Answer: A. dead cell