In: Biology
Describe the ‘theory” of Spontaneous Generation and how Francesco Redi and Louis Pasteur disproved the theory, using the process of scientific method
Answer- According to theory of spontanious generation, the living organisms originates spontaniously from non-living material.
Experiment of Frencesco Redi-
Thus he concluded that, the maggots did not appear from meat spontaniously but they arises only from eggs of fly which can only be laid in uncovered jars.
Experiment of Louis Pasteur-
He performed several experiments by which the spontaneous generation of microbes was disproved. The simplest and most sophisticated one was with the use of a swan-neck flask. He performed experiment in following steps-
He concluded that germs in the air were able to enter down the straight-necked flask and contaminate the broth. The other flask, however, trapped germs in its curved neck, preventing them from reaching the broth, which never showed microbial growth or became cloudy.