विभिन्न प्रकार के स्थायी ऊतक (permanent tissues), विभज्योतक ऊतकों (meristematic tissues) से किस प्रक्रिया के परिणामस्वरूप बनते हैं?

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?