PO:0009011 plant structure An anatomical structure that is or was part of a plant, or was derived from a part of a plant. PO:0025131 plant anatomical entity An anatomical entity that is or was part of a plant. PO:0009009 plant embryo A whole plant (PO:0000003) that participates in the plant embryo stage (PO:0007631). PO:0007033 whole plant development stage A plant structure development stage (PO:0009012) that has as primary participant a whole plant (PO:0000003). all all This term is the most general term possible PO:0001097 plant zygote stage A sporophyte development stage (PO:0007134) that occurs during the interval between fertilization and the first cell division of the plant zygote (PO:0000423). PO:0000003 whole plant A plant structure (PO:0005679) which is a whole organism. PO:0028002 sporophyte development stage A whole plant development stage (PO:0007033) that has as primary participant a whole plant (PO:0000003) during the interval between fertilization (or apogamy) and death. obsolete_plant_structure_development_stage obsolete_plant_structure_development_stage obsolete_plant_anatomy obsolete_plant_anatomy PO:0025337 life of whole plant stage A maximal whole plant development stage. PO:0030027 thallus A whole plant in the gametophytic phase that has a flat growth form and no distinct organs. PO:0025279 megagametophyte A whole plant in the gametophyte development stage (PO:0028003) that produces only plant egg cells (PO:0020094). PO:0009012 plant structure development stage A stage in the life of a plant structure (PO:0009011) during which the plant structure undergoes developmental processes. PO:0025280 microgametophyte A whole plant (PO:0000003) in the gametophyte development stage (PO:0028003) that produces plant sperm cells (PO:0000084). PO:0025017 plant spore A whole plant (PO:0000003) that arises through meiosis and is contained in a spore wall. PO:0000034 vascular system A maximal portion of vascular tissue (PO:0009015) in a whole plant (PO:0000003), collective plant structure (PO:0025497), multi-tissue plant structure (PO:0025496), or cardinal part of multi-tissue plant structure (PO:0025498).