MCQ
In plants auxin synthesis occurs in
- ACortex
- BPhloem cells
- ✓Root and shoot tips
- DXylem cells
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$I$. Platyhelminthes $II$. Coelenterates $III$. Aschelminthes $IV$. Annelids $V$. Echinoderms
$II.$ Promoted bud dormancy
$III.$ Promoted stomatal closure
$IV.$ Promoted abscission layer
Identify the hormone/s which promote/s all these events in plants and choose the correct option