Plant Tissues: Meristematic and Permanent Tissues What is Tissues? The plants and animals may be grouped together into two categories- unicellular and multicellular. The body of unicellular organisms is made up of a single cell only which carries on all the activities of life. For instance, a single-celled organism Amoeba (not visible to the naked eye) performs all its life processes(locomotion, nutrition, respiration, reproduction etc.) within the framework of its small cell. The body of multicellular organisms, on the other hand, is made up of a large number of cells which do not take part in all the life processes … Continue reading Plant Tissues