( ( In ( woody plants ) ) ( , ( ( as ( the roots ) ) ( ( mature ( they ( will ( ( ( grow wider ) , ) ( developing ( ( ( additional ( vascular tissue ) ) and ) ( a ( protective bark ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (JJ woody) (NNS plants))) (, ,) (NP (RB as) (DT the) (NNS roots)) (VP (VBP mature) (SBAR (S (NP (PRP they)) (VP (MD will) (VP (VB grow) (ADJP (JJR wider)) (, ,) (S (VP (VBG developing) (NP (NP (JJ additional) (NN vascular) (NN tissue)) (CC and) (NP (DT a) (JJ protective) (NN bark)))))))))) (. .)))
In woody plants, as the roots mature they will grow wider, developing additional vascular tissue and a protective bark.
(ROOT (S (NP (JJ Vascular) (NN tissue)) (VP (VBD allowed) (NP (DT these) (NNS plants)) (S (VP (TO to) (VP (VB grow) (NP (JJR taller)))))) (. .)))