Carolus created the modern natural classification for living organisms. According to the modern classification of living organisms, there are three main ones.
– Animals (which includes birds, humans)
– Plants includes all trees, bushes, and shrubs
– Microorganisms includes bacteria and viruses
Smart Science Pro has already explained plants classifications. Next is the Cells. You’ll be learning a lot about microorganism classification in the next couple hours.
Who are Microorganisms, and What Are They?
While you can easily see the main types of living beings, microorganisms cannot be seen with the naked eye. Because microorganisms have living organisms, it is necessary to use special tools to observe them.
These organisms are unicellular. That is, they have only one cell to make their complete body. Both animal cell theory (and plant cell theory) claim that both those cells possess an organized nucleus. However, sometimes microorganisms don’t have an ordered nucleus and other times it does.
Classification of Microorganisms
Because the natural classification includes only organisms according to their relationships, most organisms other than animals and plants fall under Microorganisms. There are 5 types of microorganisms as per the classification.
- Bacteria
- Virus
- Algae
- Fungi
- Protozoa
Here is a quick explanation about each of these organisms.
Bacteria
Bacteria has a 3-5um body size – Mikrometer. Their cells only contain the cytoplasm. But the nucleus membrane of the cells is not available. Bacteria have a cell wall made up of protein – Mucopeptide. As bacteria that can cause disease, there are some bacteria that can be harmful.
These bacteria cause disease has a gelatinous shell around the cell wall. The cell structure is identical to s.
According to their nutritional habits, there are five additional types.
Saprophytic Bacteria
This kind of bacteria can also be found in decaying tree trunks.
Parasitic bacteria
They can be pathogenic. They can cause serious injury to the host.
Autotrophic Bacteria
These are photosynthetic, and they come in purple colors. They can make their own food.
Symbiotic bacteria
This type can be found in the root nudules of leguminous leaves. They can do nitrogen fixation. This is when the atmospheric nitrogen is converted to an absorbable form.
Chemosynthetic bacteria
These bacteria can also create their own food by using chemical reactions. One theory says The beginning of life is through the use of chemical reactions. Fission takes place every 18-20 seconds and if cholera bacteria reproduces at these rates, then 4.7×10 22 of bacteria could be produced in 24 hours. This bacteria will produce a mass equal to 2000 tons.
It is happening, however, because of poisoning of excretory substances.
Algae
Algae can’t be seen by the naked eye. Unicellular and muticellular filamentous algae exist. They make their own food via photosynthesis. Thus, they are known as Autotrophic.
Algae of all kinds are aquatic and can be found living in freshwater as well as in salt water. Algae may develop in either individual cells or as a cluster of cells.
Protozoa
Protozoa also is a single-celled organism with a large number aquatic species, around 40,000. They often feed on other living creatures and then move onto another organism. Protozoa a 10-52um body.
Fungi
Fungi none yellow plants are not photosynthetic. They are hypertrophic nutrition types because they are parasitic, or saprophytic. To make lichens they show a symbiotic relationship with Algae. Some fungi can even be seen naked.
There are many kinds of mushrooms and molds. They have multicellular structures called mycelium.
Virus
Viruses possess a very simplistic structure and the smallest known microorganism. They can reproduce, and they don’t breathe. Viruses can capture live cells and reproduce on them. They possess the crystallization capacity.
