( Heterotrophs ( ( ( can not ) ( ( ( ( ( produce ( organic compounds ) ) ( from ( inorganic sources ) ) ) and ) therefore ) ( rely ( on ( ( consuming ( other organisms ) ) ( in ( the ( food chain ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Heterotrophs)) (VP (MD can) (RB not) (VP (VP (VB produce) (NP (JJ organic) (NNS compounds)) (PP (IN from) (NP (JJ inorganic) (NNS sources)))) (CC and) (ADVP (RB therefore)) (VP (VB rely) (PP (IN on) (S (VP (VBG consuming) (NP (JJ other) (NNS organisms)) (PP (IN in) (NP (DT the) (NN food) (NN chain))))))))) (. .)))
Heterotrophs cannot produce organic compounds from inorganic sources and therefore rely on consuming other organisms in the food chain.
(ROOT (S (NP (NP (NNS Organisms)) (ADJP (JJ incapable) (PP (IN of) (NP (NP (NN photosynthesis)) (SBAR (WHNP (WDT that)) (S (VP (MD must) (ADVP (RB therefore)) (VP (VB obtain) (NP (NN energy) (CC and) (NN carbon)) (PP (IN from) (NP (NN food))) (PP (IN by) (S (VP (VBG consuming) (NP (JJ other) (NNS organisms))))))))))))) (VP (VBP are) (VP (VBN called) (NP (NNS heterotrophs)))) (. .)))