NEET 2010 Biology question

One of the commonly used plant growth hormone in tea plantations is

(1)Indole-3-acetic acidCorrect
(2)Ethylene
(3)Abscisic acid
(4)Zeatin

Answer: (1)

Solution

Indole-3-acetic acid (IAA) is the natural auxin. Auxins maintain apical dominance and promote adventitious rooting: shoot tips of tea bushes are repeatedly plucked and pruned (decapitation removes the auxin source and makes the lateral buds grow into a bushy plant), and auxin (IAA, IBA, NAA) is used to root tea

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Question ID VK-090420