Question

In the experimentation to disapprove spontaneous generation. Pasteur used as control experiment

• A. Flasks without broth
• B. Flasks with swan necks
• C. Flasks with straight necks
• D. Flasks without necks

Answer 1

The correct option is B Flasks with swan necks

• Theory of spontaneous generation states that life originates from inanimate objects such as rotten meat, bread or wheat.
• Louis Pasteur disproved the theory of spontaneous generation by his famous 'swan-necked experiment'.
• He took a swan-necked flask and put a nutrient mixture in it. He could not find any microorganisms in the flask. Thus, he concluded that the theory of spontaneous generation was not true.
• Therefore, the correct answer is' flasks with swan necks'.