( ( ( ( ( Placental ( and ( marsupial eggs ) ) ) ( ( do not ) ( contain yolk ) ) ) -- ) ( nutrients ( are ( delivered ( to ( ( the ( developing animal ) ) ( from ( ( the mother ) ( via ( the placenta ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (JJ Placental) (CC and) (JJ marsupial) (NNS eggs)) (VP (VBP do) (RB not) (VP (VB contain) (NP (NN yolk))))) (: --) (S (NP (NNS nutrients)) (VP (VBP are) (VP (VBN delivered) (PP (TO to) (NP (NP (DT the) (VBG developing) (NN animal)) (PP (IN from) (NP (NP (DT the) (NN mother)) (PP (IN via) (NP (DT the) (NN placenta)))))))))) (. .)))
Placental and marsupial eggs do not contain yolk -- nutrients are delivered to the developing animal from the mother via the placenta.
(ROOT (S (NP (PRP You)) (VP (VBP call) (SBAR (WHNP (DT an) (NN animal) (WHPP (IN in) (WHNP (WDT which)))) (S (NP (NP (DT the) (NN embryo)) (, ,) (VP (ADVP (RB often)) (VBN termed) (NP (DT a) (NN joey))) (, ,)) (VP (VP (VBZ is) (VP (VBN born) (S (ADJP (JJ immature))))) (CC and) (VP (MD must) (VP (VB complete) (NP (PRP$ its) (NN development)) (PP (IN outside) (NP (NP (DT the) (NN mother) (POS 's)) (NN body))))) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN marsupial)))))) (. .)))