Biology teacher

  Kingdom Monera Notes for NEET Biology: Simple & Easy Revision Kingdom Monera showing different bacterial shapes and types including archaebacteria, eubacteria, and cyanobacteria in diverse habitats. - Dr.Sanjaykumar Pawar  When we study the classification of living organisms, one of the most fundamental groups is Kingdom Monera . It includes the simplest and most primitive life forms on Earth— bacteria . Despite their tiny size, bacteria are extremely important for life processes, ecosystems, and even human industries. 🌍 What is Kingdom Monera? Kingdom Monera consists of all bacteria . These organisms are unicellular (single-celled), prokaryotic , and lack a well-defined nucleus. They are considered: The oldest living organisms The most abundant organisms on Earth Found in almost every environment , including extreme habitats 🌱 Where are bacteria found? Bacteria are truly everywhere. They can survive in: Soil (in huge numbers) Water bodies Air Inside ...

  NCERT Class 11 Biology: Viruses, Viroids, Prions and Lichens Explained Simply - Dr.Sanjaykumar Pawar  Viruses Viruses are acellular (non-cellular) Comparison of Viruses, Viroids, Prions, and Lichens showing structure, composition, and biological roles in Class 11 Biology. organisms . They are not considered fully living because they do not have a cellular structure. Outside a host cell, viruses remain inactive and crystalline (non-living form) . Inside a living cell, they become active and use host machinery to reproduce . They are called obligate intracellular parasites (can live and reproduce only inside host cells). They kill or damage host cells during reproduction. The word virus means “poisonous fluid” . Discovery of Viruses (Important for exams) Dmitri Ivanovsky (1892) discovered microbes causing tobacco mosaic disease. These agents were smaller than bacteria and passed through bacteria-proof filters. M.W. Beijerinck (1898) named them “virus” a...