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Spraying of which of the following phytohormone on juvenile conifers helps in hastening the maturity period, that leads to early seed production?
NCERT verbatim physiological application: "Spraying juvenile conifers with GAs hastens the maturity period, thus leading to early seed production." Instant 5-second answer!
Gibberellins () mediate diverse developmental transitions in angiosperms and gymnosperms:
Conifers normally have a prolonged juvenile phase lasting several years before reaching reproductive maturity. Exogenous spray of gibberellic acid overcomes juvenility, accelerating cone formation and enabling early commercial seed collection.
NCERT states verbatim: "Spraying juvenile conifers with GAs hastens the maturity period, thus leading to early seed production."
Diagnose every choice: Know exactly why the right option works and why distractors fail.
ABA is a growth inhibitor that enforces seed dormancy and induces stomatal closure during water stress.
IBA is a synthetic/natural auxin primarily used for root initiation on stem cuttings.
Matches NCERT verbatim: GA hastens maturity in juvenile conifers for early seed production.
Zeatin is a naturally occurring cytokinin from corn kernels that promotes cytokinesis and shoot morphogenesis.
Auxin promotes flowering in pineapple and prevents premature fruit drop, while GA induces early maturity in conifers and promotes bolting. Confusing these leads to incorrect hormone identification.
"Spraying juvenile conifers with GAs hastens the maturity period, thus leading to early seed production."
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