( ( At ( the ( cellular level ) ) ) ( , ( ( ( ( ( plant morphogenesis ) , ) ( to ( a ( large extent ) ) ) ) , ) ( ( is ( dependent ( upon ( ( cell division ) ( in ( a ( specific ( spatial order ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (DT the) (JJ cellular) (NN level))) (, ,) (NP (NP (NN plant) (NNS morphogenesis)) (, ,) (PP (TO to) (NP (DT a) (JJ large) (NN extent))) (, ,)) (VP (VBZ is) (ADJP (JJ dependent) (PP (IN upon) (NP (NP (NN cell) (NN division)) (PP (IN in) (NP (DT a) (JJ specific) (JJ spatial) (NN order))))))) (. .)))
At the cellular level, plant morphogenesis, to a large extent, is dependent upon cell division in a specific spatial order.
(ROOT (S (NP (NNS Cells)) (VP (VB acquire) (NP (JJ different) (NNS identities)) (PP (IN in) (NP (NP (DT an) (JJ ordered) (JJ spatial) (NN arrangement)) (PP (IN during) (NP (NNS morphogenesis)))))) (. .)))