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b.  Urey
                       c.  Haldane
                       d.  Darwin
              8.   The first organic molecules to be formed are
                      a.  Fats
                      b.  Carbohydrates and amino acids
                      c.  Proteins
                      d.  Cellulose
              9.  The largest unit in which gene flow is possible is a
                   a.  Population
                   b.  Species
                   c.  Sub species
                   d.  Genus

                SUBJECTIVE

             Q.                                    Questions                                    Marks      Level
             NO
              1.   Who is regarded as the father of evolution?                                     1         E
              2.   How were the organic molecules created on Earth?                                1         E
              3.   Differentiate between organic and chemical evolution.                           3        AV
              4.   a) Which scientists proved by an experiment that life originated                3        AV
                   from inorganic molecules?
                   b) Explain the experiment performed by them.
              5.   State any two factors which could lead to the rise of a new species             3         D
                   and explain them.
              6.   Does geographical isolation of individuals of a species lead to                 3         D
                   formation of a new species? Provide a suitable explanation.



















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