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Jul 7, 2022 ClassificationThe method of classifying organisms based on common characteristics is known as biological classification. Aristotle was the first to attempt to provide a scientific basis for biological classifications. He classified plants into trees, shrubs, and herbs using simple physical features. He also classified the animals into two groups: those with red blood and those without red blood. Linnaeus devised a Two Kingdom categorisation system with Plantae and Animalia kingdoms that contained all plants and animals, respectively. Although classification biology, i.e. classifying creatures into plants and animals, was straightforward, many species did not fit into either group. As a result, the long-used two-kingdom categorisation was determined to be insufficient. Five Kingdom System of Biological ClassificationA Five Kingdom Classification was suggested by R.H. Whittaker, in 1969. He called the kingdoms Monera, Protista, Fungi, Plantae, and Animalia. He used his primary categorisation criteria to utilise cellular structure, body architecture, mode of feeding, reproducing, and evolutionary linkages. MoneraThe characteristics of the Monera kingdom are as follows:
ArchaebacteriaThese bacteria may be found in the toughest environments, such as hot springs and marshy and salty surroundings. Bacteria found in:
EubacteriaThese are also called ‘true bacteria’. They consist of a rigid cell wall. If the bacteria are motile, they have flagella. Ideally, eubacteria can be divided into three types: heterotrophs, autotrophs and chemotrophs.
ProtistaThe characteristics of this group are as follows:
The Protista kingdom includes euglenoids, slime moulds, protozoans, dinoflagellates and chrysophytes. Euglenoids
Slime moulds
ProtozoansThis category contains organisms that are unicellular heterotrophs, i.e., are not capable of preparing their food and instead depend on other organisms. They can be predators or parasites. These are classified into four primary categories:
Dinoflagellates
Chrysophytes
Fungi
The kingdom of fungi is divided into four different classes, as explained in the table below:
Some Important Fungi:
Kingdom Plantae
Kingdom AnimaliaKingdom Animalia is another one of the biological classifications. The following are some of the features of Animalia members:
VirusesSince viruses are acellular entities, they do not fit within Whittaker’s five-kingdom biological classifications. They are made up of nucleic acid (either DNA or RNA) wrapped by a protein sheath. These viruses can only develop and increase within the confines of a host cell. Viruses occur in the form of crystals outside of the host cell. Variola, for example, produces smallpox, and HIV (human immunodeficiency virus) is the causative virus for AIDS. ViroidsViroids differ from viruses in many ways. They lack a protein coat and consist of RNA molecules only. Viroids are much smaller than viruses. Viroids exclusively infect plants, but viruses infect all species. LichensThey are known to be symbiotic relationships between algae and fungus. Autotrophic algal components synthesise and give nourishment. The fungal component provides shelter and protection. Because lichens do not develop in contaminated regions, they are an excellent pollution indicator. ConclusionThe method by which scientists organise living species is known as classification biology. Aristotle postulated it initially based on simple physical traits. Eventually, Linnaeus divided all living creatures into two kingdoms: Plantae and Animalia. Whittaker suggested a five-kingdom categorisation divided into Monera, Protista, Fungi, Plantae, and Animalia. The five-kingdom categorisation was based on cell structure, body structure, mechanism of nourishment and procreation, and evolutionary links. Traditionally, the similarity between organisms was established by evaluating an organism’s physical traits; however, contemporary categorisation employs a range of approaches, particularly genetic research. A system of seven levels is used to classify organisms:
Frequently Asked Questions about Classifications1. What is taxonomy?A. Taxonomy studies the ideas and techniques involved in organism categorisation, naming, and identification. This strategy represents the organism’s most important characteristics and interactions. The primary goal of classification biology is to classify various plant and animal species. 2. What exactly is diatomaceous earth? Why are diatoms described as “pearls of the ocean”?A. The buildup of enormous diatom deposition over many years produces a silica coating that extends over a hundred metres. Diatoms are the most important producers in the marine ecosystem. They provide nutrition both for other sea creatures as well as for themselves. 3. Briefly explain what insectivorous plants are?A. Insectivorous plants or carnivorous plants get nourishment from catching and eating insects and other protozoans. Insectivorous plants are more common in acidic bogs. Relevant ArticlesStructural Organisation & Different LevelsStructural Organisation The most extensive, in-depth studies begin with the … Structural Organisation & Different Levels Read More » Read More >> What is Mitosis? Phases of Mitosis, Diagrams, CytokinesisMitosis phase Have you ever wondered what the yeast in … What is Mitosis? Phases of Mitosis, Diagrams, Cytokinesis Read More » Read More >> What is Cell Division? Process, Cell Cycle, MitosisCell Division Have you ever noticed that the wound heals … What is Cell Division? Process, Cell Cycle, Mitosis Read More » Read More >> What are Polysaccharides? Characteristics, Types, FunctionsPolysaccharides What is a polysaccharide? Polysaccharides are a major group … What are Polysaccharides? Characteristics, Types, Functions Read More » Read More >> Study AbroadWith Turito Study AbroadWith Turito Study AbroadGet an Expert Advice from TuritoGet an Expert Advice from TuritoCAPWith Turito CAP.Coding
With Turito Coding.RoboticsWith Turito RoboNinjaWith Turito RoboNinjaTutoring1-on-1 tutoring for the undivided attentionWhich eukaryotic group contains mainly multicellular?Plants are mainly multicellular organisms, predominantly photosynthetic eukaryotes of the kingdom Plantae.
Which eukaryotic group contains mainly unicellular organisms?protist, any member of a group of diverse eukaryotic, predominantly unicellular microscopic organisms.
Which of the following groups contain organisms that are multicellular?Multicellular organisms fall within three of these kingdoms: plants, animals and fungi.
Which eukaryotic group contains mainly single celled eukaryotes such as protozoans?Kingdom Protista includes all eukaryotes that are not animals, plants, or fungi. Kingdom Protista is very diverse. It consists of both single-celled and mult icell ular organisms.
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