Small plants (especially aquatic ones) need a thin cellulose membrane surrounding the cells to maintain the strength and shape of the body. Large land plants require a more advanced support system, represented by two types of mechanical structures: collenchyma and sclerenchyma. Otherwise, these fabrics are called supporting or reinforcing
In social science, a person is a person who has certain social properties. Based on the definition, it can be understood that this concept is inextricably linked with society. Let's take a look at it in more detail














