The bacteria which directly convert atmospheric nitrogen into nitrogenous compounds are called nitrogen-fixing bacteria. These bacteria, such as Rhizobium and Azotobacter, play a crucial role in the nitrogen cycle by making atmospheric nitrogen available to plants in the form of ...
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The smallest organism among the options provided is the virus. Viruses are much smaller than bacteria, mycoplasma, and yeast. They are submicroscopic infectious agents that can only replicate inside the living cells of a host organism.
Louis Pasteur is renowned for his contributions to the germ theory of diseases and the process of fermentation of alcohol. His work revolutionized microbiology and medicine, leading to the development of vaccines and pasteurization techniques to ensure food safety.
The study of pollen grains is called palynology. It involves the analysis of pollen and spores to understand plant ecology, evolution, and history. Palynology is used in fields such as botany, archaeology, and geology to study past climates and environments.
The study of fruits is called pomology. It focuses on the cultivation, harvesting, storage, and processing of fruits. Pomology is an important branch of horticulture that aims to improve fruit quality and yield while promoting sustainable practices.