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    9.  During a science experiment, Priya and her      10.  Ankur imagined  a situation  where  X  were
                         friends were testing how saliva breaks down          absent in the lungs. What would be the most
                         starch using two test tubes. They followed all       immediate effect?       (Abstract Thinking)
                         the steps carefully, but after completing the            X
                         experiment, they noticed no colour change in
                         either test tube. Priya was confused and asked
                         her friends what might have gone wrong.
                         •   Sameer: “Maybe the iodine solution was
                            not added.”

                         •   Riya: “Both  test  tubes  should turn blue
                            anyway.”
                         •   Arun:  The rice  must  have dissolved                                      Blood vessel
                            completely."
                         •   Meenu:  “Saliva must  have stopped                     (a)   Digestion will stop.
                            working.”
                                                                                    (b)   Oxygen will not enter the
                         Who  correctly  identified  the  mistake  in the              bloodstream.
                         experiment?                (Decomposition)
                                                                                    (c)  Food will not be absorbed.
                                (a)  Sameer         (b)  Riya
                                                                                    (d)  Bones will become weak.
                                (c)  Arun           (d)  Meenu

                                       A  student  studies  an unknown animal’s  digestion process  and  records  the
                                       following steps:
                                       •  Step 1: The animal swallows grass quickly with very little chewing.
                                       •  Step 2:  Food  enters  a large stomach  chamber where microbes  begin  to
                                          break down cellulose.
                                       •  Step 3: Partially digested food is brought back to the mouth and chewed again.
                                       •  Step 4: Food passes through multiple stomach chambers for further digestion
                                          and absorption.
                                       What is the best conclusion?

                                             (a)  It is a carnivore because digestion starts in the stomach.

                                             (b)   It is a ruminant because it shows rumination and a multi-chambered
                                                 stomach.

                                             (c)  It is a human because digestion involves chewing.

                                             (d)  It is a non-herbivore because cellulose is not digested.

                                                                                          Life Processes in Animals   83

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