( ( Insert plant ) ( ( ( ( stem ( into ( water ( of ( test tube ) ) ) ) ) ( ( Check daily ) ( add ( water ( as needed ) ) ) ) ) ( to ( ( keep it ) ( at ( the ( same level ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Insert) (NN plant)) (VP (VBP stem) (PP (IN into) (NP (NP (NN water)) (PP (IN of) (NP (NN test) (NN tube))))) (NP (NP (VB Check) (NN daily)) (SBAR (S (VP (VBP add) (NP (NP (NN water)) (ADJP (RB as) (VBN needed))))))) (S (VP (TO to) (VP (VB keep) (NP (PRP it)) (PP (IN at) (NP (DT the) (JJ same) (NN level))))))) (. .)))
Insert plant stem into water of test tube Check daily add water as needed to keep it at the same level.
(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)))))) (. .)))