vascular plants including clubmosses ferns seed plants gymnosperms angiosperms generally aerial subterranean subsystems shoots consist stems bearing green photosynthesising leaves reproductive structures underground vascularised roots bear root hairs tips generally lack chlorophyll non vascular plants liverworts hornworts mosses produce ground penetrating vascular roots plant participates photosynthesis sporophyte generation nonphotosynthetic liverworts may able contribute part energy needs photosynthesis mosses hornworts root system shoot system interdependent
Natural science Biology Botany