Why carnation did not absorb pink food color?

Carnations may not absorb pink food color due to several factors, including the type of dye used and the plant's cellular structure. The xylem, responsible for transporting water and nutrients, may not effectively take up the dye if it's not water-soluble or if the plant's vascular system is not functioning optimally. Additionally, the color absorption can be influenced by the plant's natural pigmentation and the pH level of the water. Lastly, if the cut stem is not properly prepared or damaged, it may hinder the absorption process.