This substance is found in the walls of dead cells, providing them with waterproofing properties. It makes the cells impervious to water and gases, helping to protect the plant. This compound is a key feature of the cork layer that f orms as the plant ages. It plays an important role in preventing the entry of pathoge ns. Which substance is described by the paragraph above?

Given below are two statements: one is labelled as Assertion (A) and the other as Reason (R). Assertion (A): Collenchyma provides mechanical support to growing parts of plants. Reason (R): Its cells have unevenly thickened cell walls at the corners. In light of the above statements, choose the most appropriate answer:

Which of the following tissues remains alive at maturity and is primarily responsible for storage?