Final answer:
Discovery-based science does not require a preconceived hypothesis. Both descriptive and hypothesis-based science are important in scientific study.
Step-by-step explanation:
Discovery-based science, also known as descriptive science, aims to observe, explore, and discover without requiring a preconceived hypothesis. On the other hand, hypothesis testing, also known as hypothesis-based science, starts with a specific question or problem and a potential answer or solution that can be tested. Both approaches are important in scientific study, and most scientific endeavors combine elements of both descriptive and hypothesis-based science.