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SAI International School
                                                   Subject- Biology
                                         Chapter- Heredity And Evolution
                       Subtopic- Fossils, Evolution by Stages, Artificial Selection

                                                       Module-28
                                        Home Assignment- II (Worksheet)

            1.     Which scientists performed the experiment to justify life originated from inorganic
                   molecules?
                       a.  Miller and Urey
                       b.  Oparin
                       c.  Mendel
                       d.  Haldane
            2.     Vermiform appendix is an example of
                      a.  Analogous organ
                      b.  Vestigial organ
                      c.  Homologous organ
                      d.  Analytic organ
            3.     The organs present in two organisms indicate that they are derived from the same
                   ancestor are:
                       a. Analogous Organs
                       b. Respiratory Organs
                       c. Sense organs
                       d. Homologous Organs

              4.   DIRECTION : The   following   question   consist  of    two statements - Assertion
                   (A)  and  Reason  (R).  Answer  these  questions  selecting  the  appropriate  option
                   given below:
                   (a)    Both      A    and      R    are     true     and     R     is   the     correct
                           explanation of A.
                   (b)  Both  A  and  R  are  true  but  R  is  not  the  correct
                           explanation of A.
                   (c) A is true but R is false.
                   (d) A is false but R is true.
                   (e) Both Assertion and Reason are false.
                    Assertion : The birds have large, light spongy bones
                       with air sacs.
                   Reason: These adaptations help them during flight.
              5.   Assertion: Speciation is the reproductive isolation amongst once interbreeding
                   population.
                   Reason: Genetic drift, Natural selection and Severe DNA change can cause
                   speciation.
              6.   Explain with examples how the following are evidences in favour of evolution in
                   organisms. (i) Homologous organs (ii) Analogous organs (iii) Fossils

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