( Glucose ( -- ( ( is ( ( a ( ( monosaccharide ( , ( or simple ) ) ) sugar ) ) ( produced ( through photosynthesis ) ) ) ) . ) ) )
(ROOT (S (NP (NNP Glucose)) (: --) (VP (VBZ is) (NP (NP (DT a) (ADJP (JJ monosaccharide) (, ,) (CC or) (JJ simple)) (NN sugar)) (VP (VBN produced) (PP (IN through) (NP (NN photosynthesis)))))) (. .)))
Glucose --is a monosaccharide, or simple sugar produced through photosynthesis.
(ROOT (S (NP (NNP Glucose)) (VP (VBZ is) (NP (NP (DT a) (NN carbohydrate)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN produced) (PP (IN by) (NP (NN photosynthesis))))))))) (. .)))