Example 1 : Aerenchyma tissue is a special type of tissue found in aquatic plants. This tissue consists of parenchyma cells whose main function is to carry out the process of photosynthesis and store the food. In between the parenchyma cells large air spaces are present. The air spaces are the characteristic of aerenchyma tissue but not of individual parenchyma cells.

Example 2 : Blood is a fluid tissue which consists of. red blood cells, different types of white blood cells and platelets. All these cells have different features. These cells with different characteristics together make blood which performs various functions in body.