▁the ▁tree ▁of ▁life ▁to ▁describe ▁the ▁relationship ▁between ▁groups ▁of ▁organ isms , ▁but ▁to ▁suggest ▁that , ▁as ▁with ▁branches ▁in ▁a ▁living ▁tree , ▁line ages ▁of ▁species ▁competed ▁with ▁and ▁supp l anted ▁one ▁another . ▁Pet ter ▁Hell ström ▁has ▁demonstrated ▁that ▁Dar win ▁cons ci ously ▁chose ▁to ▁name ▁his ▁tree ▁after ▁the ▁bib lic al ▁tree ▁of ▁life , ▁as ▁described ▁in ▁Gen esis , ▁thus ▁rel ating ▁his ▁theory ▁to ▁Christian ▁myth ology , ▁and ▁suggesting ▁that ▁he ▁did ▁so ▁to ▁mobil ise ▁the ▁imagination ▁of ▁his ▁readers . ▁ ▁H ae ck el ▁ ▁Ernst ▁H ae ck el ▁( 1 8 3 4 – 1 9 1 9 ) ▁constructed ▁several ▁trees ▁of ▁life . ▁His ▁first ▁sketch ▁( in ▁the ▁ 1 8 6 0 s ) ▁of ▁his ▁famous ▁tree ▁of ▁life ▁shows ▁" P it he can th rop us ▁al alus " ▁as ▁the ▁ancest or ▁of ▁H omo ▁s api ens . ▁His ▁ 1 8 6 6 ▁tree ▁of ▁life ▁from ▁Gener elle ▁Mor ph ologie ▁der ▁Organ is men ▁shows ▁three ▁kingdom s : ▁Plant ae , ▁Pro t ista ▁and ▁Animal ia . ▁His ▁ 1 8 7 9 ▁' P ed ig ree ▁of ▁Man ' ▁was ▁published ▁in ▁The ▁E volution ▁of ▁Man . ▁ ▁Contempor ary ▁usage ▁In ▁ 1 9 9 0 , ▁Carl ▁Wo ese , ▁Otto ▁K and ler ▁and ▁Mark ▁W heel is ▁proposed ▁a ▁" tree ▁of