21. Auxin also stimulates cell division if cytokinins are present.22. In horticulture, auxins , especially cuttings of plants. 23. Fruits form abnormal morphologies when auxin transport is disturbed. 24. Auxin and cytokinin play a role in the earlier stages of aleurone development.25. So the auxin molecules are trapped inside the cell. 26. Quercetin ( a flavonol ) and Genistein are naturally occurring auxin transport inhibitors. 27. A healthy, green, leaf is constantly creating a hormone called auxin . 28. It is classified as an auxin plant hormone derivative. 29. Xylem tissues can be generated when the auxin concentration is equal to the cytokinins. 30. Specifically " PIN3 " has been identified as the primary auxin carrier.