This page discusses cytokinins, plant hormones from adenine crucial for plant cell division and various processes like mitosis, chloroplast development, and leaf senescence, often with auxins. Notably...This page discusses cytokinins, plant hormones from adenine crucial for plant cell division and various processes like mitosis, chloroplast development, and leaf senescence, often with auxins. Notably, zeatin facilitates mitosis in seed germination. Cytokinin signaling includes plasma membrane receptors, activation of nuclear transcription factors, and gene regulation, resulting in proteins essential for these cellular functions.