Tag: bacteria
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Soil as Ecological Factor
Introduction Soil consists of weathered layer of Earth’s crust with products of decay of living organisms intermingled. In soil, thus, abiotic & biotic components are intimate. Soil is considered to be chief organizing centre for land ecosystems. Pedosphere: Outermost layer of earth that is composed of soil & subject to its formation. Pedogenesis: Process of…
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The Basics – Human Health & Disease
Health can be defined in certain ways, but heath is sum total of physical, mental and social well being. Social + mental + physical = health Mind plays a very important role as it influenced by neural system, endocrine & immune system. The immune system maintains our heath, thus directly or indirectly mind affects our…
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Entamoeba histolytica
(Anaerobic parasite) Causes Amoebic dysentery or Amoebiasis. Distribution: Worldwide. Habits & Habitat: Found in large intestine (colon) of man, in both mucosal & sub-mucosal layers of it. It feeds on tissue and RBCs mainly. Secrete a toxic substance to dissolve mucous lining of the intestine. It gradually recedes deep in the mucosal & sub-mucosal…