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  1. Auxin - Wikipedia

    Auxins (plural of auxin / ˈɔːksɪn /) are a class of plant hormones (or plant-growth regulators) with some morphogen -like characteristics. Auxins play a cardinal role in coordination of many growth and …

  2. Auxin | Definition, Functions, & Uses | Britannica

    Auxin, any of a group of plant hormones that regulate growth, particularly by stimulating cell elongation in stems. Auxins also play a role in cell division and differentiation, in fruit development, in the …

  3. Auxin (Plant): Definition, Function and Structure - Biology Dictionary

    May 13, 2018 · An auxin is a plant hormone derived from the amino acid tryptophan. An auxin may be one of many molecules, but all auxin molecules are involved in some sort of cellular regulation.

  4. Mechanisms of auxin action in plant growth and development

    May 19, 2025 · The phytohormone auxin coordinates plant growth by forming local maxima and gradients through cell-to-cell transport and metabolic control.

  5. 4.4.1: Auxin - Biology LibreTexts

    The most important auxin produced by plants is indole-3-acetic acid (IAA). It undergoes both polar (unidirectional) and nonpolar transport. Key functions include mediating tropisms, growth and …

  6. Auxin – Definition, Structure, and Function - Science Facts

    Feb 17, 2023 · An auxin is a group of growth hormones found in all plant tissues in varying concentrations. The name of this class of hormone comes from the Greek word ‘ auxein ‘, which …

  7. Auxin and its role in plant development: structure, signalling ...

    Aug 21, 2021 · Auxins are plant hormones that play a central role in controlling plant growth and development across different environmental conditions. Even at low concentrations, auxins can …

  8. How Does Auxin Work? The Science of Plant Growth

    6 days ago · Learn the science behind auxin. Understand how this crucial phytohormone controls plant growth, development, and environmental responses at the cellular level.

  9. What is Auxin? – Auxin Definition - BYJU'S

    Auxins are a group of naturally occurring and artificially synthesised plant hormones. They play an important role in the regulation of plant growth. Auxins were initially isolated from human urine. Auxin …

  10. Auxin - GeeksforGeeks

    Jul 23, 2025 · Auxin is a plant hormone. Auxin hormone function is to control growth and developmental processes in plants, including cell expansion, root initiation, and bud and flower growth. Auxin, …