Question

Plant cells have a _________ that is rigid and non-living.

Answer 1

Cell wall

1. Cell wall is a rigid structure present outside of the cell membrane (extracellular structure) in a plant cell.
2. Its rigidity is due to the presence of cellulose and lignin which are tough and complex carbohydrates.
3. Cell wall is protective in function and thus has to be durable.
4. It is non-living in nature.

Final answer : Plant cells have a cell wall that is rigid and non-living.