TheEvolutionaryOriginofPlants Paragraph1 -anismsthatgaverisetoplantspresumablylackedtrueroots,stems,leaves,'sdifferentgroupsofalgae,(naturalevolutionary)',,asdolandplantsandhavecellwallsmadeofcellulose,,thegoodstorageandcellwallmoleculesofredandbrownalgaearedifferent. Paragraph2 Todaygreenalgaelivemainlyinfreshwater,,thegreenalgaewouldhavebeensubjectedtoenvironmentalpressuresthatresultedinadaptationsthatenhancedtheirpotentialtogiverisetoland-anisms. Paragraph3 Theenvironmentalconditionsoffreshwaterhabitats,unlikethoseofoceanhabitats,
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