The study of plant hormones provides a fascinating insight into the way plant growth and development is controlled. This Plant Hormones set can be used to demonstrate the role of plant hormones and their use by man thus experiments on breaking dormancy in seeds rooting cuttings killing weeds preventing leaves from dropping etc. are included. These experiments are not difficult to perform and many are suitable for GCSE students.Possible investigations include:Encouraging root formationPreventing buds from sproutingControlling the germination of seedsControlling leaf fallSelective herbicidal actionGrowing fruits without seedsAcceleration of fruit ripeningThe effect of I.A.A. on shoot growthThe effect of I.A.A. on root growthThe effect of Gibberellic Acid on genetically dwarf plantsTropic responsesThe set contains:Full teaching notesCulture Medium - enough to make up 20 LitresIndol-3-yl acetic acid - 1.5gLanolin - 100gGibberellic acid - 0.5g2.4D Herbicide - 10ml0.1% IAA in lanolin paste - 100gCoumarin - 5gN.A.A. - 10g0.01% IAA in lanolin pasteThiourea - 10gEthrel C - 10mlTetrazolium chloride - 1gAgar - 10g