Final answer:
All angiosperms have flowers in common, which are their reproductive structures responsible for the production of seeds.
Step-by-step explanation:
All angiosperms have flowers in common. Flowers are the reproductive structures of angiosperms and are responsible for the production of seeds. They are derived from modified leaves and contain both male and female reproductive organs. Flowers are typically brightly colored and fragrant, attracting pollinators such as bees, butterflies, and birds. After pollination, the ovary of the flower develops into fruit, which contains the seeds and aids in their dispersal.