( ( The ( fertilized egg ) ) ( ( is ( called ( a zygote ) ) ) . ) )
(ROOT (S (NP (DT The) (VBN fertilized) (NN egg)) (VP (VBZ is) (VP (VBN called) (NP (DT a) (NN zygote)))) (. .)))
The fertilized egg is called a zygote .
(ROOT (S (NP (NP (DT The) (VBN fertilized) (NN egg)) (SBAR (WHNP (WDT that)) (S (ADVP (RB sexually)) (VP (VBG reproducing) (S (NP (NNS organisms)) (VP (VB begin) (NP (NN life)) (SBAR (IN as) (S (VP (VBZ is) (VP (VBN known) (PP (IN as) (NP (DT a) (-LRB- -LRB-) (NN n) (-RRB- -RRB-))))))))))))) (VP (VBP zygote)) (. .)))