The Tissue System
Introduction to Tissue System, Types and Characteristics of tissue System
As you have learnt, the plant cells are organised into tissues, in turn the tissues are organised into organs. Different organs in a plant show differences in their internal structure. This part of chapter deals with the different type of internal structure of various plant organs and its adaptations to diverse environments.
A group of tissues performing a similar function, irrespective of its position in the plant body, is called a tissue system. In 1875, German Scientist Julius von Sachs recognized three tissue systems in the plants. They are:
1. Epidermal tissue system (derived from protoderm)
2. Ground tissue system (derived from ground meristem)
3. Vascular tissue system (derived from procambium)