Louis Pasteur succeeded in disproving the spo | vedclass

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(B) Louis Pasteur is famous for his swan-neck flask experiment. He boiled nutrient broth in glass flasks and then drew out the necks of the flasks int

Vedclass · Accepted Answer

He was ingenious in drawing out the neck of the glass flasks so as to provide access to air but not to the micro-organisms.

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(B) Louis Pasteur is famous for his swan-neck flask experiment. He boiled nutrient broth in glass flasks and then drew out the necks of the flasks into a long,$S$-shaped curve (swan-neck). This design allowed air to enter the flask,which was necessary for life according to proponents of spontaneous generation,but the $S$-shaped curve trapped dust particles and micro-organisms from the air in the neck. As a result,the broth remained sterile for a long period,proving that micro-organisms do not arise spontaneously from non-living matter but come from pre-existing life.

Louis Pasteur succeeded in disproving the spontaneous generation theory because:

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