AP BIOLOGY

Detailed explanation-1: -Final answer: The flexibility in plants is due to Collenchyma tissue.

Detailed explanation-2: -Collenchyma tissues are composed of oval or prismatic cells that are commonly elongated and can occur in long strands or cylinders. Collenchyma tissue is specialised to provide flexibility to various parts of the plant like petiole and stem since they are non lignified. It allows for easy bending without breakage.

Detailed explanation-3: -Collenchyma tissue is composed by elongated living cells of uneven primary thick walls, which possess hemicellulose, cellulose, 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.

Detailed explanation-4: -Collenchyma cells consist of living cells with thickening of cellulose and pectin around the corners. This provides flexibility to soft aerials parts like leaves, stems, etc.

Detailed explanation-5: -Collenchyma has the following functions: The collenchymatous tissue provides mechanical support to the plants. These tissues make the plant flexible and also provide tensile strength to the plants. Some collenchyma tissues contain chloroplasts.