( ( ( ( ( ( ( ( ( Nonvascular plants ) , ) ( such ( as mosses ) ) ) , ) ( lack ( ( an ( internal ( conducting system ) ) ) ( for ( ( water and ) nutrients ) ) ) ) ) , ) so ) ( they ( ( depend ( on ( their ( immediate surroundings ) ) ) ) ( for moisture ) ) ) ) . )
(ROOT (S (S (NP (NP (JJ Nonvascular) (NNS plants)) (, ,) (PP (JJ such) (IN as) (NP (NNS mosses))) (, ,)) (VP (VBP lack) (NP (NP (DT an) (JJ internal) (NN conducting) (NN system)) (PP (IN for) (NP (NN water) (CC and) (NNS nutrients)))))) (, ,) (IN so) (S (NP (PRP they)) (VP (VBP depend) (PP (IN on) (NP (PRP$ their) (JJ immediate) (NNS surroundings))) (PP (IN for) (NP (NN moisture))))) (. .)))
Nonvascular plants, such as mosses, lack an internal conducting system for water and nutrients, so they depend on their immediate surroundings for moisture.
(ROOT (S (NP (NNP Moss)) (VP (VBZ is) (VP (RBS best) (VBN classified) (PP (IN as) (NP (DT a) (NN nonvascular) (NN plant))))) (. .)))
Moss is best classified as a nonvascular plant.