Question

The cells of tissue A have small intercellular spaces, and their walls are thickened at the corners. The cells of tissue B do not have intercellular spaces, and the cell walls are thickened. Identify tissues A and B.

• A. A: Collenchyma; B: Chlorenchyma
• B. A: Chlorenchyma; B: Sclerenchyma
• C. A: Sclerenchyma; B: Collenchyma
• D. A: Collenchyma; B: Sclerenchyma

Answer 1

The correct option is D A: Collenchyma; B: Sclerenchyma

Collenchyma cells have thick deposits of cellulose in their cell walls and appear polygonal in cross section. The strength of the tissue results from these thickened cell walls and the longitudinal interlocking of the cells.
The main function of sclerenchyma is to provide mechanical support. They consist of long, narrow cells with a thick lignified wall. They are mostly dead and devoid of protoplast.