Describe how snail butterfly shelf fungi euglena cactus are an example of the cell theory?

Snail, butterfly, shelf fungi, euglena, and cactus exemplify cell theory as they are all composed of cells, which are the basic units of life. Each organism is made up of one or more cells that carry out essential life processes, such as metabolism and reproduction. Additionally, these organisms demonstrate the principle that all living things arise from pre-existing cells, as they grow and develop from cellular division. Together, they illustrate the diversity of life forms that adhere to the fundamental concepts of cell theory.