<prompt> Causative agent for Farmers Lung is?Thermoactinomyces sacchariThermophiles actinomycesCotton dustPigeon feather  <response>: Ans. is b i.e., Thermophiles actinomyces Farmers lung is a hypersensitivity type III pneumonitis induced by the inhalation of biologic dusts coming from hay dust or mold spores or any other agricultural products. These types of immune response are most often initiated by exposure to thermophilic actinomycetes most commonly Saccharopolyspora rectivirgula. 