The study of plants is called botany. Botany is a branch of biology that focuses on the scientific study of plants, including their structure, growth, reproduction, metabolism, and evolution. It encompasses a wide range of topics, including plant anatomy and morphology, plant ecology, plant genetics and biotechnology, plant physiology, and plant taxonomy and systematics. Botanists study plants to better understand their role in the environment and their importance in human life, including their use in medicine, agriculture, and industry.