( Seeds ( ( ( ( lack dormancy ) and ) ( can ( ( germinate ( within ( 24 hours ) ) ) ( under ( optimal conditions ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Seeds)) (VP (VP (VBP lack) (ADVP (RB dormancy))) (CC and) (VP (MD can) (VP (VB germinate) (PP (IN within) (NP (CD 24) (NNS hours))) (PP (IN under) (NP (JJ optimal) (NNS conditions)))))) (. .)))
Seeds lack dormancy and can germinate within 24 hours under optimal conditions.
(ROOT (S (NP (NN Seed)) (ADVP (RB dormancy)) (VP (VBZ ensures) (SBAR (IN that) (S (NP (NNS seeds)) (VP (VBP germinate) (ADVP (RB only)) (SBAR (WHADVP (WRB when)) (S (NP (NP (NNS conditions)) (PP (IN for) (NP (JJ seedling) (NN survival)))) (VP (VBP are) (ADJP (JJ optimal))))))))) (. .)))