फ्लोएम ऊतक का कौन-सा घटक मुख्य रूप से पूरे पौधे में खाद्य पदार्थों के स्थानांतरण (translocation) के लिए जिम्मेदार 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?