| Points of Comparison | Auxin | Gibberellin |
|---|
| Structure | It’s an unsaturated structure with a side chain that might be single or double. | It’s a side-chain-free saturated tetracyclic gibbane structure. |
| Discovered in | Higher plants have this. | It can be found in both higher plants and fungi. |
| Dominance at the apex | This results in apical dominance. | It does not affect apical dominance. |
| Root Development | At normal concentrations, auxin suppresses root development. | Such consequences do not exist. |
| Growth of the Shoots | Encourages the growth of shoot segments. | Encourages the growth of the healthy shoot. |
| Growth of the Leave | Has a negligible impact on leaf growth. | Enhances the growth of the leaves |
| Elongation of the stem | Shoots that are genetically small and do not elongate. | Shoots that are genetically small and often elongate |
| Bolting | It does not affect bolting. | It causes rosette plants to bolt. |
| Growth of Calluses | It is necessary for callus development. | It plays no part in the development of calluses. |
| Dormancy of Seeds and Buds | Auxin does not affect the dormancy of seeds or buds. | Gibberellin is important for seed germination and breaking dormancy in seeds and buds. |
| Formation of Roots | It aids in the formation of roots. | It doesn’t encourage roots. |
| Hormonal Reactions | Some plants respond to auxin by being feminised. | Some plants respond to gibberellin by becoming more masculine. |
| Transport | Basipetal transport is demonstrated. | Both acropetal and basipetal transportation is possible. |
| Functions | Axion elongation, cell differentiation, cell division, cellular expansion, isodiametric expansion, and lateral expansion are important processes in plants. | Seed germination, stem elongation, flowering, dormancy, sex expression, enzyme induction, and leaf and fruit withering are important processes. |