Question

From the list below, choose all features of cork cells.

Option 1: High water content
Option 2: Lignin-rich cell walls
Option 3: Low density
Option 4: Protective outer layer

Answer 1

Cork cells feature lignin-rich cell walls, and low density, and serve as a protective outer layer. They are produced by the cork cambium in woody plants, contain suberin, and protect against water loss and physical damage.

Step-by-step explanation:

The features of cork cells from the list provided are Option 2: Lignin-rich cell walls, Option 3: Low density, and Option 4: Protective outer layer. Cork cells are produced by the cork cambium, which is the outermost lateral meristem in woody plants. These cells contain a waxy substance called suberin, which repels water and makes the cells waterproof.

The bark, which is made up of cork cells, serves as a protective outer layer, safeguarding the plant against physical damage and reducing water loss. Lignin is a complex polymer found in the secondary cell walls of plant cells, providing compressive strength. It is present in cork cells, contributing to their protective function. The cork cells are closely packed with no cracks or air spaces, ensuring they form a low-density, impermeable barrier that can withstand environmental stresses.