Single-celled organisms are different from single-celled organisms. Autotrophic organisms can produce the organic matter they need. Heterotrophs can survive by absorbing organic matter from the environment. They all have the ability to reproduce, and there are various ways of reproduction, such as division, reproduction, budding, joint reproduction and so on. . The movement of single-celled organisms is generally carried out by flagella, and the number of flagella of different kinds of single-celled organisms is also different. . . .