( ( The ( sexual reproduction ) ) ( ( is ( ( highly oogamous ) type ) ) . ) )
(ROOT (S (NP (DT The) (JJ sexual) (NN reproduction)) (VP (VBZ is) (NP (ADJP (RB highly) (JJ oogamous)) (NN type))) (. .)))
The sexual reproduction is highly oogamous type.
(ROOT (S (NP (JJ Sexual) (NN reproduction)) (ADVP (RB usually)) (VP (VBP occur) (PP (IN during) (NP (NP (NNS times)) (PP (IN of) (NP (JJ environmental) (NN stress)))))) (. .)))