conceptGrowthGrowth is an irreversible permanent increase in size of an organ or its parts or an individual cell.Recall QuestionWhy is plant growth generally indeterminate?Reveal AnswerBecause plant growth continues throughout life due to the presence of meristems.Recall cueSource-backed detailEnergyGrowth involves metabolic processes that consume energy.Indeterminate growthPlant growth continues throughout life due to meristems.Open form of growthNew cells are always added to plant body by meristems.Primary growthRoot apical meristem and shoot apical meristem; elongation along axis.Secondary growthIn gymnosperms and dicots; lateral meristems, vascular cambium and cork-cambium increase girth.