EVERYDAY SCIENCE

Detailed explanation-1: -He infused a broth by mixing plant and animal matter and boiled it in the belief that it would kill all the microorganisms. He sealed the broth and left it for a few days. He observed that the broth had become cloudy and that it has microscopic organisms in it.

Detailed explanation-2: -Needham, along with many other scientists of his time period, staunchly believed in spontaneous generation among microorganisms. He conducted an experiment in the hope of supporting the idea of spontaneous generation, and he published his results in 1750. His study concluded that spontaneous generation did occur.

Detailed explanation-3: -Needham established from his observations that micro-organisms do not grow from eggs and proposed a theory of spontaneous generation whereby living organisms develop from non-living matter at the microscopic level. He carried out microscopic observations with the comte de Buffon in 1748.

Detailed explanation-4: -In 1745, John Needham (1713–1781) published a report of his own experiments, in which he briefly boiled broth infused with plant or animal matter, hoping to kill all preexisting microbes. He then sealed the flasks.

Detailed explanation-5: -In England, John Needham challenged Redi’s findings by conducting an experiment in which he placed a broth, or “gravy, ” into a bottle, heated the bottle to kill anything inside, then sealed it. Days later, he reported the presence of life in the broth and announced that life had been created from nonlife.