Ground tissue system:
Ground tissues are produced by the ground meristems. This tissue type comprises the majority of the plant body. The tissue system that arises from periblem meristematic tissue and form the whole plant body other than epidermis and vascular bundles is known as ground tissue system.
Structure: The major cells of the ground tissue are parenchyma cells, which function in photosynthesis and nutrient storage. This tissue system is composed of general parenchymatous cells. Often parenchyma, collenchyma and sclerenchyma can combinedly form this tissue.
Different parts: This tissue is present in almost everywhere in plan body, such as- root, stem, leaf etc.
Ground tissue of leaf: The ground tissue of leaf is named as mesophyll. It may be of two types:
Ground tissue of root and stem: It is of two types:
- Extra-stelar region. From pericycle to outward
- Intra-stelar region. From pericycle to inward
Extra-staler region: It can be divided into three parts:
(i) Hypoderms, (ii) Common outer cortex and iii) Endodermis.
Intra-stelar region: It can be also divided into three parts:
(i)Pericycle, (ii) Medulla and (iii) Medullary rays.