considered animals botanists examine internal functions processes within plant organelles cells tissues whole plants plant populations plant communities levels botanist may concerned classification taxonomy phylogeny evolution structure anatomy morphology function physiology plant life strictest definition plant includes land plants embryophytes include seed plants gymnosperms including pines flowering plants free sporing cryptogams including ferns clubmosses liverworts hornworts mosses embryophytes multicellular eukaryotes descended ancestor obtained energy sunlight photosynthesis
Natural science Biology Botany