In nature, all living things belong to living things. Organisms should be divided into several realms. Organisms that can survive and feed themselves are called plant realms, which are called plants for short.
Plants have obvious cell walls and nuclei, and the cell walls are composed of glucose polymer-cellulose. Plants have the ability of photosynthesis-that is, they can use light energy and chlorophyll that animals don't have to produce food by using water, minerals and carbon dioxide. After releasing oxygen, glucose, an energy-rich substance, remains as a component of plant cells.
Aristotle divided living things into plants (usually motionless) and animals (often moving to get food). In the Linnaeus system, it is divided into two fields: plant kingdom and animal kingdom. Later, people gradually understood that the original definition of the plant kingdom included several unrelated groups, which moved fungi and several algae to a new realm.
However, whether professionals or the general public, there are still many views on plants. Indeed, if you try to put "plants" into a single category perfectly, there will be problems.