to-address-the-problem-of-disproving-spontaneous-generation-which-of-the-followi

Question

To address the problem of disproving spontaneous generation, which of the following options provides a key difference between the experiments of John Needham and Lazzaro Spallanzani?

Accepted Answer

Spallanzani boiled broth for a longer period and sealed the flasks more effectively, preventing contamination from the air.

Answer

Needham boiled the broth to kill any existing microorganisms, whereas Lazzaro Spallanzani did not boil the broth.

Answer

Spallanzani also boiled broth, but he boiled it for a shorter period than Needham.

Answer

Spallanzani also boiled broth, but he did not seal the flask.

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To address the problem of disproving spontaneous generation, which of the following options provides a key difference between the experiments of John Needham and Lazzaro Spallanzani?