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.
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B
By the presence of cells with thick and lignified cell walls.
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C
By the presence of green colour pigment called chlorophyll.
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D
By the presence of living cells with many nuclei.
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Solution
The correct option is B By the presence of cells with thick and lignified cell walls. ∙ Sclerenchyma is a simple permanent tissue in plants. ∙ The cells of this tissue are dead. So they do not contain chlorophyll or nuclei. ∙ It is the tissue that makes plants hard and stiff. ∙ The cells are long and narrow as the walls are thickened due to presence of lignin. ∙ Often the walls are so thick that there is no internal space inside the cell.