( ( ( The ( primary function ) ) ( of ( ( the ( light reactions ) ) ( of photosynthesis ) ) ) ) ( ( is ( A ( -RRB- ( to ( produce ( ( energy ( rich glucose ) ) ( from ( carbon ( ( dioxide and ) water ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ primary) (NN function)) (PP (IN of) (NP (NP (DT the) (JJ light) (NNS reactions)) (PP (IN of) (NP (NN photosynthesis)))))) (VP (VBZ is) (SBAR (S (NP (NNP A)) (-RRB- -RRB-) (VP (TO to) (VP (VB produce) (NP (NP (NN energy) (JJ rich) (NN glucose)) (PP (IN from) (NP (NN carbon) (NN dioxide) (CC and) (NN water))))))))) (. .)))
The primary function of the light reactions of photosynthesis is A) to produce energy rich glucose from carbon dioxide and water.
(ROOT (S (NP (NNS Photosynthesis)) (VP (VBZ converts) (NP (NN carbon) (NN dioxide) (CC and) (NN water)) (PP (IN into) (NP (NN glucose)))) (. .)))