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Welcome to eGyanKosh, your comprehensive resource for academic excellence! In this dedicated unit, we delve into “Diversity of the Microbial World,” an essential component of the IGNOU 2025 curriculum. This study material aims to provide students with a thorough understanding of the vast array of microorganisms that inhabit our planet. From bacteria and fungi to viruses and archaea, this unit explores their unique characteristics, ecological significance, and roles in human health. Best of all, we offer this invaluable study material for free download, ensuring that every learner has access to the resources they need for success. Prepare to expand your knowledge and appreciation of the microbial world with us!