In a ring girdled plant: #NTA #NEET #NEETquestion #mcq #2021 #Biology - Study24x7
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20 followers study24x7 06 Sep 2021 11:55 AM study24x7 study24x7

In a ring girdled plant: #NTA #NEET #NEETquestion #mcq A

the shoot dies first

B

The root  dies first

C

The shoot and root die together

D

Neither root nor shoot will die

NEET / Medical
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  • Dev kumar

    • In girdling or ringing experiments, a ring of bark is cut from the stem. It also removes phloem. Nutrients collect above the ring, where the bark also swells up and may give rise to adventitious roots. Growth is also vigorous above the ring. The tissues below the ring not only show stoppage of growth but also begin to shrivel. The death occurs due to the inability of the leaves to transport sugars especially sucrose to the roots. If however, the xylem is also removed, the water and minerals also do not get transported leading to the death of the roots and eventually the tree.

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