जाइलम ऊतक (xylem tissue) में कौन सी कोशिकाएं पौधों में जल और घुले हुए खनिजों के ऊर्ध्वाधर परिवहन (vertical transport) के लिए मुख्य रूप से उत्तरदायी होती 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?