HORTICULTURE

Detailed explanation-1: -The correct option is A True. Sclerenchyma: The cell wall of sclerenchymatous tissues is thickened due to the presence of lignin. The lumen is absent due to irregularly thickened walls because of the presence of pits in their walls.

Detailed explanation-2: -Collenchyma is a supporting tissue composed of more or less elongated living cells with unevenly thickened, nonlignified primary walls.

Detailed explanation-3: -The cells of collenchyma tissue are living, elongated and irregularly thickened at the corners.

Detailed explanation-4: -Final answer: The flexibility in plants is due to Collenchyma tissue.

Detailed explanation-5: -Collenchyma tissue is composed of elongated cells with irregularly thickened walls. They provide structural support, particularly in growing shoots and leaves.