AP BIOLOGY

Detailed explanation-1: -Sclerenchyma is the ground or fundamental tissue of the plants. Sclerenchyma cells are found mostly in the cortex of stem and leaf. It’s main function is to provide support. The mature cells of this tissue are generally dead and have thick walls called the lignin which varies in size, shape and structure.

Detailed explanation-2: -Sclerenchyma tissue (Figure 5) is composed of sclerenchyma cells, which are usually dead at maturity (i.e., have lost their protoplasts). They characteristically contain very thick, hard secondary walls lined with lignin; consequently, sclerenchyma provides additional support and strength to the plant body.

Detailed explanation-3: -Sclerenchyma is a type of simple permanent tissue that has thick and dignified walls. Sclerenchyma gives structural support and rigidity to plants. Sclerenchyma cells lose their ability to divide at maturity and become dead cells.

Detailed explanation-4: -Sclerenchyma tissue, when mature, is composed of dead cells that have heavily thickened walls containing lignin and a high cellulose content (60%–80%), and serves the function of providing structural support in plants.

Detailed explanation-5: -Sclerenchyma cells has dead cell, it consists of heavily thickened walls which contains lignin, it makes impermeable to wall and cells can’t survive. Q. Which of the following tissue has lignified cell wall?