( ( Having ( ( vascular tissues ) ( allows ( ( most plants ) to ) ) ) ) ... )
(ROOT (S (VP (VBG Having) (S (NP (NN vascular) (NNS tissues)) (VP (VBZ allows) (S (NP (JJS most) (NNS plants)) (VP (TO to)))))) (: ...)))
Having vascular tissues allows most plants to...
(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)))) (. .)))