Question : Assertion: Louis pasteur showed that in flask open to air, new living organisms appeared in the heat killed yeast culture. Reason: Life arise from pre-existing life.

Question : Assertion: Louis pasteur showed that in flask open to air,

1.	Question : Assertion: Louis pasteur showed that in flask open to air, new living organisms appeared in the heat killed yeast culture. Reason: Life arise from pre-existing life.
Answer» Solution :Louis Pasteur, by careful expermentation,demostrated that LIFE comes only from pre-existing life. He observed that in pre-sterlised closed flasks, life did not COME from killed yeast while in anotehr falsk opento air, new iving organisms arose from kille dyeast. He showed that the source of the new apearing micro-organisms was the air and the organisms did not arise from the nuterient MEDIA.