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Per NCERT, which cells in PHLOEM regulate the loading + unloading of sugars in sieve tubes?
ATracheids
BCompanion cells (specialised parenchyma)
CSclerenchyma
DCuticle cells
Answer & Solution
Correct answer: B. Companion cells (specialised parenchyma)
Per NCERT §3.2.4(iii), companion cells regulate sieve tubes. Tracheids are in xylem; sclerenchyma is supportive; cuticle is the waxy layer.
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