Question

Deepa observed two slides of plant tissues. She was told one had parenchyma cells, while the other slide had sclerenchymatous cells. How can she confirm the slide with sclerenchyma cells?

• A. By the presence of large internal space inside the cell.
• B. By the presence of cells with thick and lignified cell walls.
• C. By the presence of green colour pigment called chlorophyll.
• D. By the presence of living cells with many nuclei.

Answer 1

The correct option is B By the presence of cells with thick and lignified cell walls.

$\bullet$ Sclerenchyma is a simple permanent tissue in plants.
$\bullet$ The cells of this tissue are dead. So they do not contain chlorophyll or nuclei.
$\bullet$ It is the tissue that makes plants hard and stiff.
$\bullet$ The cells are long and narrow as the walls are thickened due to presence of lignin.
$\bullet$ Often the walls are so thick that there is no internal space inside the cell.