The legislative process in bicameral systems differs significantly from unicameral systems primarily in structure and decision-making. Bicameral legislatures consist of two houses, typically a lower house and an upper house, where bills must be approved by both chambers, resulting in a more thorough examination of legislation. This can lead to more debate and compromise but may also result in gridlock. In contrast, unicameral systems simplify the process, allowing for quicker decision-making since only one body is involved in approving legislation. Each system has unique advantages and challenges that reflect different approaches to governance.