Which scientist's experiment with sterilised flasks established the theory of biogenesis, that life arises only from pre-existing life?

1. Biogenesis states that living things arise only from other living things. 2. Louis Pasteur showed this using sealed sterilised flasks in which no life appeared. 3. Darwin proposed natural selection, not biogenesis, which rules out option A. 4. So the scientist is Louis Pasteur, option D. _Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 19 Origin and Evolution of Life "Theories on Origin of Life", p.282_