Which plant tissue consists of living cells with cellulosic cell walls thickened unevenly at the corners, providing mechanical support to growing parts of plants such as young stems and petioles?

💡 Solution & Explanation

Collenchyma tissue is composed of living plant cells featuring uneven cellulosic thickenings at their corners, primarily enriched with pectin to provide structural flexibility. It supports actively growing organs like young stems and leaf petioles without hindering their elongation. Unlike sclerenchyma, collenchyma cells remain alive at maturity.