NURSING ANM AND GNM

Detailed explanation-1: -Microorganisms (“animalcules”) had first been seen by van Leeuwenhoek (1676) in pepper-water which had been allowed to stand exposed to air.

Detailed explanation-2: -Animalcule (’little animal’, from Latin animal + the diminutive suffix-culum) is an old term for microscopic organisms that included bacteria, protozoans, and very small animals. The word was invented by 17th-century Dutch scientist Antonie van Leeuwenhoek to refer to the microorganisms he observed in rainwater.

Detailed explanation-3: -Two men are credited today with the discovery of microorganisms using primitive microscopes: Robert Hooke who described the fruiting structures of molds in 1665 and Antoni van Leeuwenhoek who is credited with the discovery of bacteria in 1676.