( ( ( Water and ) ( ( other materials ) ( necessary ( for ( ( biological activity ) ( in trees ) ) ) ) ) ) ( ( are ( transported ( throughout ( ( ( ( ( ( the stem ) and ) ( branches ( in ( ( thin ( , ( hollow tubes ) ) ) ( in ( the xylem ) ) ) ) ) ) , ) or ) ( wood tissue ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Water)) (CC and) (NP (NP (JJ other) (NNS materials)) (ADJP (JJ necessary) (PP (IN for) (NP (NP (JJ biological) (NN activity)) (PP (IN in) (NP (NNS trees)))))))) (VP (VBP are) (VP (VBN transported) (PP (IN throughout) (NP (NP (DT the) (NN stem)) (CC and) (NP (NP (NNS branches)) (PP (IN in) (NP (NP (JJ thin) (, ,) (JJ hollow) (NNS tubes)) (PP (IN in) (NP (DT the) (NN xylem)))))) (, ,) (CC or) (NP (NN wood) (NN tissue)))))) (. .)))
Water and other materials necessary for biological activity in trees are transported throughout the stem and branches in thin, hollow tubes in the xylem, or wood tissue.
(ROOT (S (NP (NNS Stems)) (VP (VBD transport) (NP (NN water)) (PP (TO to) (NP (NP (JJ other) (NNS parts)) (PP (IN of) (NP (DT the) (NN plant))))) (PP (IN through) (NP (NP (DT a) (NN system)) (PP (IN of) (NP (NNS tubes)))))) (. .)))