Question

Given below is an illustration of the experiment performed by Louis Pasteur. Explain the experiment and its conclusion.

Answer 1

Louis Pasteur's experiment utilised two flasks filled with nourishing broth. One flask featured an open or cracked neck, while the other had a swan-neck design that kept dust and microbes out. The broth was sterilised by boiling both flasks.

Observations and Conclusion:

1. No microbial proliferation was seen in the swan-neck flask; however, the broken-neck flask exhibited growth.
2. This demonstrated that airborne germs lead to contamination, refuting the hypothesis of spontaneous production and corroborating biogenesis (life originates from pre-existing life).