Auxins and Gibberellins — Predicted 2026

AI-Predicted Question Angles for UPSC 2026

Based on trend analysis, current affairs, and recurring themes in Auxins and Gibberellins.

Comparative Analysis of Auxin and Gibberellin Effects

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NEET frequently tests the ability to distinguish between the roles of different plant hormones. A question might present a list of physiological effects and ask which one is *not* associated with auxins, or which one is *exclusively* associated with gibberellins. This requires a clear, comparative understanding of their functions, rather than just isolated facts. For example, differentiating between auxin's role in parthenocarpy and gibberellin's role in fruit size, or auxin's role in apical dominance versus gibberellin's role in bolting.

Mechanism of Action and Specific Biochemical Pathways

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While NEET generally focuses on physiological effects, there's an increasing trend towards understanding basic mechanisms. Questions might delve into the 'acid growth hypothesis' for auxins or the role of gibberellins in stimulating $\alpha$-amylase synthesis in the aleurone layer. Understanding the precursor for IAA (tryptophan) or the mevalonic acid pathway for GAs could also be tested. This requires a slightly deeper dive beyond just memorizing effects, linking the hormone to its molecular action.

Agricultural and Horticultural Applications with Specific Examples

high

The practical applications of PGRs are a perennial favorite in NEET. Questions will likely focus on specific synthetic auxins (e.g., 2,4-D as a herbicide, NAA/IBA for rooting) and gibberellins (e.g., GA3 for grape size, malting). A scenario-based question describing an agricultural problem and asking for the appropriate hormone treatment is highly probable. This tests not just knowledge of the hormone but also its real-world utility and the specific chemical names involved.