( ( These ( young roots ) ) ( ( are ( ( an ( important site ) ) ( of ( mineral absorption ) ) ) ) . ) )
(ROOT (S (NP (DT These) (JJ young) (NNS roots)) (VP (VBP are) (NP (NP (DT an) (JJ important) (NN site)) (PP (IN of) (NP (NN mineral) (NN absorption))))) (. .)))
These young roots are an important site of mineral absorption.
(ROOT (S (NP (JJ Young) (NNS roots) (CC and) (NNS leaves)) (VP (VBP are) (NP (NP (DT the) (JJ major) (NNS sites)) (PP (IN of) (NP (NN gibberellin) (NN production))))) (. .)))