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SAI INTERNATIONAL SCHOOL


                                                         CLASS -IV


                                             SCIENCE-HOME ASSIGNMENT

                        Chapter 7- Leaves-The Food Factory of Plants


                                                              Sub topic- Energy Flow


                   A. Choose the correct answer

               1. Who is the producer in the energy flow?

                       a. plant     b. human being      c.  lion      d. bird
               2. Who among these  indirectly receives  the energy of the sun in the

                   end?

                       a. plant     b. human being         c. fish      d. hen

               3. The phenomenon in which plants and animals depend on each

                   other is known as


                       a.Intradependence    b. intra house     c.  interdependence


                 d. inter house


               4. Which among these is not provided by plants?

                       b. spinach     b.oxygen         c. carbon dioxide     d. wood




               B. Answer the following questions.


               1.Explain  the  concept  of  ‘flow  of  energy’  between  different  living

               organisms living in a forest, in a diagrammatic way.


               2. What will happen if there is a sudden increase in the number of

               plants on the earth?
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