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    Life Processes

                                    10                                                 in Plants

                                               computational thinking quest

                    Tick ( ) the correct option.
                      1.  A  student  skips  boiling  the  leaf in  water     3.  While  writing  the  equation  of respiration,
                         first  and  directly  places  it  in  alcohol  while   Ankit made a mistake.
                         demonstrating  the  experiment  that  green          Oxygen + Energy → Glucose Carbon   Water
                                                                                                         +
                                                                                                                  +
                         leaves prepare and store food.                                                   dioxide
                         What problem might occur?                            What can be done to correct this equation?
                                                  (Abstract Thinking)                                    (Decomposition)

                                (a)  The leaf will turn green again.                (a)   Swap ‘Carbon dioxide’ and ‘Energy’

                                (b)   The leaf may not become soft and              (b)   Remove ‘Energy’ and ‘Water’
                                   can break easily.
                                                                                    (c)  Swap ‘Energy’ and ‘Glucose’
                                (c)   The iodine will not react with starch.
                                                                                   (d)  Remove    ‘Oxygen’    from    the
                                (d)   The alcohol will not remove                      equation
                                   chlorophyll.
                      2.  Rekha observes a plant with red leaves and       4.  A student recorded the number of leaves in
                                                                              Pots P, Q, and R over 15 days and plotted a
                         claims that it cannot perform photosynthesis         graph.
                         because it is not green. Which statement best
                         corrects the student’s misunderstanding?

                                                  (Abstract Thinking)

                                (a)   Red leaves do not contain
                                   chlorophyll at all.

                                (b)   Chlorophyll is present but masked                       Q               R
                                   by other pigments.                            P

                                (c)   Only green plants can prepare food.
                                                                              (a) Pot P    (b) Pot Q kept   (c) Pot R kept
                                                                            kept in direct   in direct sun-  in the dark,
                                (d)  Red leaves absorb only red light.      sunlight, with   light, without   with water
                                                                               water           water

                     84        Computational Thinking-7 (Science)

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