In Biology, What is Scientific Classification?

Taxonomy is usually called taxonomy . It is a basic science that studies the similarities and differences between biological groups and the degree of similarities and differences, and clarifies the relationships among organisms, genetics, evolutionary processes and development laws of species. To classify organisms, we must first know the definitions of living things and non-living things, but we don't seem to be able to define them accurately. For viruses, although they can be parasitic and replicated in other organisms, they do not have the general biological characteristics such as manufacturing outside the organism. Or intake of nutrients, reproduction and other phenomena. Another example is the prion that causes mad cow disease. It can cause infection but has no DNA components. DNA has been regarded as the genetic material of life. Through the process of transcription and translation with RNA, proteins are formed, and then all parts of cells are formed. Cell membranes, organelles, and so on, and cells are the smallest unit that we have long considered to constitute a living body.

The most popular classification is the Five Realms system. First, according to the presence or absence of nuclear membrane structure, organisms are divided into two categories: prokaryotes and eukaryotes. Prokaryotes are a world. Eukaryotes are further divided according to the number of cells, and certain organisms composed of single cells or multiple cells are classified

Humans have long been able to identify and give names to objects. In the early Han Dynasty, Erya divided animals into four categories: insects, fish, birds, and beasts: insects include most of them.

The scientific names of species and genera are often followed by the surname of the person to indicate the source and facilitate the search of the literature. The variant scientific name also adopts a three-name system, and the classification name requires stability, and a genus or species (including sub-species units) can only have one scientific name. A scientific name can only be used for one object (or species). If there are two or more objects, it is "

area

(English: Domain)

(biological)

The highest category in the biological science taxonomy. All organisms are divided into two domains: organisms without bacteria (bacteria and archaea) are classified into

Knowledge exists between comparative categories. The classification of organisms is called systematics or taxonomy, and this classification should reflect the differences between different organisms.

Taxonomy is a discipline that studies the theory and methods of taxonomy.

It includes three areas of classification, naming and identification. Classification is to classify organisms into different taxa (taxonomy units) according to their similarity and kinship; naming is to give scientific taxonomic names to biological taxonomy units according to international biological nomenclature; identification is to determine whether an organism belongs to a named The process of taxon. Therefore, in general, taxonomy is a discipline that identifies and classifies various organisms, arranges them into a classification system according to taxonomic criteria, and scientifically names the identified taxon. Its purpose is to explore the phylogeny and evolutionary history of living things, reveal the diversity of living things and their relationships, and build a multi-layered "natural classification system" that reflects the relationships and evolution of biological life. In this way, it is helpful for people to understand biology and the relationship between various biological groups, so as to grasp the laws of living and development of organisms, and provide convenience for the wider and more effective protection and use of the rich biological resources in nature.

Taxonomy studies the similarities and differences between biological groups and the degree of similarities and differences, and clarifies the relationships, evolutionary processes and development laws between organisms. ^[3]