Which type of plant classification includes both flowering and non-flowering species?

The correct answer encompasses both flowering and non-flowering plant species, which is a critical distinction in botanical classification. Angiosperms are known as flowering plants, characterized by the presence of flowers and seeds that develop within a fruit. Gymnosperms, on the other hand, are non-flowering plants that bear seeds exposed on cones or other structures rather than enclosed in a fruit.

By combining Angiosperms and Gymnosperms, the classification effectively captures the entire scope of vascular plants that produce seeds, regardless of whether they have flowers or not. This classification is significant for understanding the diversity and evolutionary relationships among various groups of plants within the broader context of plant biology.

While annuals refer to plants that complete their life cycle in one season and could include members from both flowering and non-flowering categories, they do not represent a distinct classification group that includes both types. Thus, it is essential to recognize that the classification of Angiosperms and Gymnosperms together accurately describes a complete category that considers both flowering and non-flowering species.