( ( The ( plant tissue ) ) ( ( ( is then ) ( allowed ( to ( grow ( on ( selective media ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN plant) (NN tissue)) (VP (VBZ is) (ADVP (RB then)) (VP (VBN allowed) (S (VP (TO to) (VP (VB grow) (PP (IN on) (NP (JJ selective) (NNS media)))))))) (. .)))
The plant tissue is then allowed to grow on selective media.
(ROOT (S (NP (JJ Vascular) (NN tissue)) (VP (VBD allowed) (NP (DT these) (NNS plants)) (S (VP (TO to) (VP (VB grow) (NP (JJR taller)))))) (. .)))