AP BIOLOGY

Detailed explanation-1: -Collenchyma is ground tissue that provides structural support to growing parts of the plant. Like parenchyma cells, collenchyma cells also go through cell division and, therefore, elongate parts of the plant such as stems and leaves.

Detailed explanation-2: -Parenchyma is one of the three main types of ground, or fundamental, tissue in plants, together with sclerenchyma (dead support tissues with thick walls) and collenchyma (living support tissues with irregular walls).

Detailed explanation-3: -Parenchyma is a type of simple permanent tissue that makes a major part of ground tissues in plants, where other tissues like vascular tissues are embedded. They are non-vascular and composed of simple, living and undifferentiated cells, which are modified to perform various functions.

Detailed explanation-4: -The ground tissue towards the interior of the vascular tissue in a stem or root is known as pith, while the layer of tissue between the vascular tissue and the epidermis is known as the cortex.

Detailed explanation-5: -As parenchyma are mostly present in cortex of roots and ground tissues, they are called as ground level tissue.