| Column-$I$ | Column-$II$ |
|---|---|
| $A$. Abscisic acid | $(i)$ Adenine derivative |
| $B$. Gibberellins | $(ii)$ Indole acetic acid |
| $C$. Kinetin | $(iii)$ Carotenoid derivative |
| $D$. Auxin | $(iv)$ Terpenes |
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| Column $I$ | Column $II$ |
|---|---|
| $a.$ Auxin | $(i)$ Root hair formation |
| $b.$ Cytokinin | $(ii)$ Seed development |
| $c.$ Ethylene | $(iii)$ Xylem differentiation |
| $d.$ $ABA$ | $(iv)$ Nutrient mobilisation |
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