( They ( also ( ( ( ( have ( a ( vascular system ) ) ) and ) ( are ( innervated ( by ( neural tissue ) ) ) ) ) . ) ) )
(ROOT (S (NP (PRP They)) (ADVP (RB also)) (VP (VP (VBP have) (NP (DT a) (NN vascular) (NN system))) (CC and) (VP (VBP are) (VP (VBN innervated) (PP (IN by) (NP (JJ neural) (NN tissue)))))) (. .)))
They also have a vascular system and are innervated by neural tissue.
(ROOT (S (NP (DT The) (NN ground) (NN tissue) (NN system)) (VP (VBZ has) (NP (ADJP (CC neither) (JJ dermal) (CC nor) (JJ vascular)) (NNS tissues))) (. .)))