( ( ( ( ( These cells ) ( were ( ( heterotrophs , ) ( which ( ( could not ) ( produce ( their ( own food ) ) ) ) ) ) ) ) and ) ( instead ( fed ( on ( ( the ( organic material ) ) ( from ( the ( primordial soup ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (DT These) (NNS cells)) (VP (VBD were) (NP (NP (NNS heterotrophs)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (MD could) (RB not) (VP (VB produce) (NP (PRP$ their) (JJ own) (NN food))))))))) (CC and) (S (ADVP (RB instead)) (VP (VBN fed) (PP (IN on) (NP (NP (DT the) (JJ organic) (NN material)) (PP (IN from) (NP (DT the) (JJ primordial) (NN soup))))))) (. .)))
These cells were heterotrophs, which could not produce their own food and instead fed on the organic material from the primordial soup.
(ROOT (S (NP (NNS Animals)) (VP (MD can) (RB not) (VP (VB produce) (NP (PRP$ their) (JJ own) (NN food)) (S (VP (VBG making) (S (NP (PRP them)) (ADJP (JJ heterotrophs)))))))))