Which one of the following pairs is not correctly matched?

  • A
    Gibberellic acid - Leaf fall
  • B
    Cytokinin - Cell division
  • C
    $IAA$ - Cell wall elongation
  • D
    Abscisic acid - Stomatal closure

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The process of soaking rice in water to induce germination is known as $..........$.

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Column-$I$Column-$II$
$a.$ Ethephon$(i)$ $GA$
$b.$ Terpene$(ii)$ Ethylene
$c.$ Zeatin$(iii)$ Natural auxin
$d.$ $IAA$$(iv)$ Cytokinin

Which plant growth regulators are required to obtain callus?

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