Plants are predominantly multicellular organisms, predominantly photosynthetic eukaryotes of the kingdom Plantae, which might exclude fungi and several algae. Plant cells were derived by endosymbiosis of the cyanobacterium into an early eukaryote about a single billion a long time ago, which gave rise to chloroplasts.[133] The first various clades https://directivepublications.org/the-journal-of-radiation-oncology/