This document defines and describes various plant vocabulary terms and plant structures. It discusses the key characteristics that define plants, such as performing photosynthesis and having cell walls. It also outlines the three main plant structures of roots, stems, and leaves. Additionally, it describes the processes of photosynthesis, water and nutrient transport throughout plants via xylem and phloem tissue, plant growth and development, and plant reproduction including the parts of flowers and the process of seed formation.