10th Class Science Sample Paper Sample Paper - 5 Term - 1

  • question_answer
      Explain the role of (a) saliva (b) trypsin (c) gastric juices in digestion

    Answer:

      (a) Saliva It is secreted in mouth by salivary glands. It breaks down starch into sugar in mouth.                    (1) (b) Trypsin It is secreted by pancreas in duodenum. It acts on proteins and converts them to peptones and peptides.                                                                                                                                                                                             (1) (c) Gastric juices These are secreted by gastric glands in stomach. These contain pepsin and rennin for digestion of proteins.                                                                                                                                                              (1)


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