MCQ
Normal secondary growth occurs in
- ✓Dicot stem
- BMonocot stem
- CBoth $(a)$ and $(b)$
- DRoot
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$I.$ Cytokinin - Delay of leaf senescence
$II.$ Auxin - Apical dominance
$III.$ Ethylene - Seed germination
$IV.$ Gibberellins - Immature falling of leaves