EVERYDAY SCIENCE

Detailed explanation-1: -Pasteur disproved it with the help of swan-necked flask experiment.

Detailed explanation-2: -Spallanzani found significant errors in the experiments conducted by Needham and, after trying several variations on them, disproved the theory of spontaneous generation.

Detailed explanation-3: -While the hypothetical process of spontaneous generation was disproved as early as the 17th century and decisively rejected in the 19th century, abiogenesis has been neither proved nor disproved.

Detailed explanation-4: -Spallanzani set out to disprove spontaneous generation by, however his findings were not accepted by all. Why did some scientists disprove his findings? He did not boil the broth for long enough. He boiled the broth too long, killing the “vital source” that some believed was needed for spontaneous generation.