Correct option is B
A high C: N ratio favours vegetative growth as carbon is used primarily in building plant structures and energy storage.
A high Carbon: Nitrogen ratio in plant tissues promotes flower bud differentiation and reproductive growth.
When carbohydrates (C) accumulate and nitrogen is low, plants shift from vegetative to reproductive phase (flowering).
A low C:N ratio promotes vegetative growth (shoots, leaves).
Bud dormancy is not a direct effect of high C:N ratio; it is regulated mainly by environmental and hormonal factors (ABA, low temperature, photoperiod).
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