( ( ( ( ( ( Aquatic plants ) ( have ( adapted ( to ( constant inundation ) ) ) ) ) , ) and ) ( they ( lack ( ( protective ( cell structures ) ) ( to ( ( protect them ) ( from desiccation ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (JJ Aquatic) (NNS plants)) (VP (VBP have) (VP (VBN adapted) (PP (TO to) (NP (JJ constant) (NN inundation)))))) (, ,) (CC and) (S (NP (PRP they)) (VP (VBP lack) (S (NP (JJ protective) (NN cell) (NNS structures)) (VP (TO to) (VP (VB protect) (NP (PRP them)) (PP (IN from) (NP (NN desiccation)))))))) (. .)))
Aquatic plants have adapted to constant inundation, and they lack protective cell structures to protect them from desiccation.
(ROOT (S (NP (NNP Plant) (NNS cells)) (VP (VBP have) (NP (NP (NNS structures)) (SBAR (WHNP (WDT that) (NN animal) (NNS cells)) (S (VP (VBP lack)))))) (. .)))