Video narration
How can mosses, ferns, pine trees, and roses all belong in one garden group called plants? Let's sort the garden-not by appearance, but by structure and reproduction. Some textbooks begin with algae, or thallophytes, whose bodies lack true roots, stems, and leaves. Next are bryophytes, like mosses, with no true transport tissue. Now the sorting changes. First body structure and transport tissue; then seeds, flowers, and fruits. Ferns have transport tissue, but no seeds. Pines are gymnosperms: their seeds are exposed, or naked. Roses are angiosperms, with seeds enclosed in fruits. So the garden becomes a teaching ladder: simple bodies, transport tissue, then seeds-naked or inside fruits. The groups look different, but they share plant structures and ways of reproducing. That answers the question: moss, fern, pine, and rose all belong to Kingdom Plantae because classification follows shared structures and reproduction, not appearance.