Plant hormones, also known as phytohormones, are natural chemicals that help regulate various growth and development processes in plants. They control functions such as seed germination, flowering, and fruit ripening. Some common types of plant hormones include auxins, gibberellins, and cytokinins, each playing a unique role in how plants respond to their environment. These hormones work in very small amounts and can influence plant behavior by promoting or inhibiting growth. For example, auxins help elongate cells, allowing plants to grow taller, while abscisic acid helps plants respond to stress, such as drought. Together, these hormones ensure that plants adapt and thrive in their surroundings.