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(a) Describe the pressure flow hypothes...

(a) Describe the pressure flow hypothesis of translocation of sugar in plants.
(b) Explain the mechanism of closing and opening of stomata.

Text Solution

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(a) Refer points to remember
(b)Refer page 191, NCERT, Text Book of Biology for Class XI.
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Knowledge Check

  • According to the pressure flow model for translocation

    A
    Sugar conc. is highest near sink area
    B
    Water enters the sieve tube by osmosis
    C
    Sugar is transported out of the sieve tubes near the source area
    D
    Sugar is transported through phloem as glucose

  • Translocation of sugar in flowering plants occurs in the form of

    A
    Glucose
    B
    Sucrose
    C
    Fructose
    D
    Maltose

  • Translocation of sugars in flowering plants occurs in the form of

    A
    glucose
    B
    sucrose disaccharide
    C
    fructose
    D
    maltose

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    The pressure flow of mass flow hypothesis of pholem translocation explains that

    Munch's mass flow hypothesis explains

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