Multiple choice

Who said that organisms develop from pre-existing organisms?

  1. Aristotle

  2. Louis Pasteur

  3. Oparin

  4. Morgan

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Louis Pasteur demonstrated through his swan-neck flask experiments that life arises only from pre-existing life (biogenesis), definitively disproving the theory of spontaneous generation. His work established that microorganisms come from existing microorganisms, not from non-living matter.