Plantae
"Multicellular eucaryotes and related unicellular forms. Principal mode of nutrition by photosynthesis, but a number of plants have secondarily lost this capacity. Their photosynthetic pigment is chlorophyll a with chlorophyll b and a number of carotenoids serving as accessory pigments. The cell walls contain cellulose as a matrix. They are primarily nonmotile organisms attached to a substrate. There is considerable differentiation of organs and tissues in the more specialized forms. Their reproduction is primarily sexual with alternating gametophytic and sporophytic phases; the former has been progressively reduced in the course of evolution. The plants have clearly evolved on at least three occasions; the red algae and brown algae have an origin separate from the rest."
Biology of Plants, Fourth Edition, Worth Publishers Inc., Stanford University, Peter H. Raven and Helena Curtis, ©1971
| Taxonomic Hierarchy | |
| Kingdom | Plantae – Vegetal, plants |
| Direct Children: | |
| Subkingdom | Biliphyta |
| Subkingdom | Viridaeplantae – green plants |
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