Question

1. which of the following individuals is credited for definitively refuting the theory of spontaneous generation using broth in a swan - neck flask?

aristotle
jan baptista van helmont
john needham
louis pasteur

Explanation:

Aristotle supported spontaneous generation, Jan Baptista van Helmont proposed a recipe for spontaneous generation of mice, John Needham's experiments seemed to support it, while Louis Pasteur's swan-neck flask experiment with broth definitively disproved the theory by showing no microbial growth when airborne contaminants were blocked.

Answer:

□ Aristotle
□ Jan Baptista van Helmont
□ John Needham
☑ Louis Pasteur