( ( These producers ) ( ( are ( known ( as ( ( autotrophs or ) ( photosynthesizing autotrophs ) ) ) ) ) . ) )
(ROOT (S (NP (DT These) (NNS producers)) (VP (VBP are) (VP (VBN known) (PP (IN as) (NP (NP (NNS autotrophs)) (CC or) (NP (VBG photosynthesizing) (NNS autotrophs)))))) (. .)))
These producers are known as autotrophs or photosynthesizing autotrophs.
(ROOT (S (NP (NNS Autotrophs)) (VP (VBZ is) (NP (NP (DT another) (NN name)) (PP (IN for) (NP (NNS producers))))) (. .)))