How auxin promote the growth of a tendril around a support?
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Auxins :-
This is the most fundamental plant hormone which was invented by Darwin in 1880. It is basically a weak organic acid which causes the cell division and cell elongates consequently a sustained growth takes place in plants.
It helps in stems growth and thus called Growth Inhibitor which acts like a controller (regulator) of roots and column growth.
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HEY FRIEND HERE IS UR ANSWER ,
Auxins are the plant hormones produces at the tip of a shoot and root. Auxins are present at the tip of tendrils. When tendrils are attached around any support their growth is slowed down as auxins are sensitive to touch. This make them move to the other side of the tip to get support this makes the other side grow faster than the side of tendril in contact with the support and the tendril bends towards the support.
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