write a short note on microorganisms
Answers
microorganism or microbe is an organism which is microscopic, which means too small to be seen by the unaided human eye. The study of microorganisms is called microbiology.
Microorganisms include bacteria, fungi, archaea, protists and viruses, and are among the earliest known life forms. The first of these four types of microorganisms may either be free-living or parasitic. Viruses can only be parasitic, since they always reproduce inside other living things.[1][2][3]
Most micro-organisms are single-celled, or unicellular organisms, but there are unicellular protists that are visible to the human eye, and some multicellular species are microscopic.
Microorganisms live almost everywhere on earth where there is liquid water, including hot springs on the ocean floor and deep inside rocks within the earth's crust. Such habitats are lived in by extremophiles.
Microorganisms are critical to nutrient recycling in ecosystems, because they act as decomposers. Because some microorganisms can also take nitrogen out of the air, they are an important part of the nitrogen cycle. Pathogenic, or harmful, microbes can invade other organisms and cause disease.
Answer:
Microscopic organisms, commonly known as microorganisms or microbes, are found all around us and even inside our bodies. The category 'Microbes' includes a massive range of organisms including bacteria, fungi, viruses, algae, archaea and protozoa.
There are 5 basic groups of microorganisms:
a. Bacteria. Bacteria are typically unicellular, microscopic, prokaryotic organisms that reproduce by binary fission .
b. Fungi: yeasts and molds.
c. Viruses.
d. Protozoa.
e. Algae.
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