( ( Within ( ( the ( ( roots and ) stem ) ) ( of ( ( the plant ) are ) ) ) ) ( ( vascular tissues ) ( ( called xylem ) . ) ) )
(ROOT (S (PP (IN Within) (NP (NP (DT the) (NNS roots) (CC and) (NN stem)) (PP (IN of) (NP (NP (DT the) (NN plant)) (VP (VBP are)))))) (NP (NN vascular) (NNS tissues)) (VP (VBD called) (NP (NN xylem))) (. .)))
Within the roots and stem of the plant are vascular tissues called xylem.
(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)))) (. .)))