( ( Then ( to ( help ( transport ( that water ) ) ) ) ) ( , ( ( up ( to ( ( the top ) ( of ( the plant ) ) ) ) ) ( , ( they ( ( 'll ( have ( vascular tissue ) ) ) . ) ) ) ) ) )
(ROOT (S (S (RB Then) (VP (TO to) (VP (VB help) (VP (VB transport) (NP (DT that) (NN water)))))) (, ,) (ADVP (RB up) (PP (TO to) (NP (NP (DT the) (NN top)) (PP (IN of) (NP (DT the) (NN plant)))))) (, ,) (NP (PRP they)) (VP (MD 'll) (VP (VB have) (NP (NN vascular) (NN tissue)))) (. .)))
Then to help transport that water, up to the top of the plant, they'll have vascular tissue.
(ROOT (S (NP (NP (JJ Present-day) (NNS plants)) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (NP (DT a) (JJ complex) (NN vascular) (NN tissue) (NN system)))))) (VP (VBP are) (VP (VBN called) (NP (NN vasuluar) (NNS plants)))) (. .)))