Question

Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from non-living matter ?

(a) Larvae could appear in decaying organic matter 

(b) Microbes did not appear in stored meat 

(c) Microbes appeared from unsterilised organic matter 

(d) Meat was not spoiled, when heated and kept sealed in a vessel 

Answer 1

Correct option (d) Meat was not spoiled, when heated and kept sealed in a vessel

Explanation

Pasteur performed experiments in which he took sterilised (by boiling) yeast and sugar solution in a long naked flask, then he bent the neck of the flask like a neck of swan. After one month he observed that no life appeared in flask solution because the curved flask neck acts as a filter. He later on broke down the neck and observed the solution. He found that many microorganisms were originated in solution.