कौन सा सरल स्थायी पादप ऊतक सेलुलोज और पेक्टिन के जमाव के कारण अनियमित रूप से मोटे कोनों वाली कोशिकाओं द्वारा विशेषता रखता है, जो नए तनों को लचीलापन और यांत्रिक सहायता दोनों प्रदान करता है?

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?