( ( The ( embryo sac ) ) ( ( was ( ( intact and ) transparent ) ) . ) )
(ROOT (S (NP (DT The) (NN embryo) (NN sac)) (VP (VBD was) (ADJP (JJ intact) (CC and) (JJ transparent))) (. .)))
The embryo sac was intact and transparent.
(ROOT (S (NP (NP (DT The) (JJ amniotic) (NN sac)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBD was) (VP (VBG sitting) (PP (IN on) (NP (NP (NN top)) (PP (IN of) (NP (DT the) (JJ flat) (NN embryo))))))))) (, ,)) (VP (VBZ envelops) (NP (DT the) (NN embryo)) (SBAR (IN as) (S (NP (PRP it)) (VP (VBZ folds))))) (. .)))