Explanation:
Exp:B 'Collenchyma', is a simple tissue with mechanical and physiological functions in a young dicotyledonous plants. This tissue is composed by elongated living cells of uneven primary thick walls, which possess cellulose, hemicelluloses, and pectic materials. It provides support structure, mechanical strength and flexibility to the petiole, leaf veins and stem of young plants, allowing for easy bending without breakage.