11th Class Biology Transportation in Animals and Plants

  • question_answer 20)
    The form of sugar transported through phloem is (a) glucose                          (b) fructose                        (c) sucrose                          (d) ribose

    Answer:

                      (c) Sucrose a disaccharide sugar is transported through phloem. It comprises of 2 unitsof glucose joined bya-1-4 linkage. It is the most inactive form of sugar so used in thetransport of food. Glucose because of presence of CHO group is reactive sugar. Fructose is founds in fruits and ribose is present in nucleic acids.


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