Collenchyma occurs in the stem and petioles of:

Explanation

Collenchyma occurs in the stem and petioles of dicot herbs. Collenchyma is a type of ground tissue found in plants that provide mechanical support. It consists of elongated cells with thickened cell walls, which can vary in thickness and distribution. Collenchyma cells often occur in strands or continuous cylinders beneath the epidermis in stems and petioles of dicotyledonous (dicot) herbs. They provide flexible support to the growing plant and help resist bending or breaking. While collenchyma can also be found in other plant types, such as monocots, xerophytes (plants adapted to arid environments), and hydrophytes (plants adapted to aquatic environments), it is most commonly associated with the stem and petioles of dicot herbs.