Gymnosperms are referred to as "naked-seeded plants", because:

Explanation

Gymnosperms produce seeds that are not enclosed within ovaries. Instead, the ovules (structures containing female gametes or eggs) are exposed on the surface of cone scales. The term "gymnosperm" means "naked seed." The seeds of gymnosperms are not protected within a fruit, as is the case with angiosperms. Instead, they are often borne on the scales of cones.