( They ( ( grow ( by ( ( ( the process ) ( of ( binary fission ) ) ) ( which ( is ( ( an ( asexualy reproduction ) ) ( of ( cells ( such ( as ( those ( that ( ( all protists ) have ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP grow) (PP (IN by) (NP (NP (DT the) (NN process)) (PP (IN of) (NP (JJ binary) (NN fission))) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (NP (NP (DT an) (JJ asexualy) (NN reproduction)) (PP (IN of) (NP (NP (NNS cells)) (PP (JJ such) (IN as) (NP (NP (DT those)) (SBAR (IN that) (S (NP (DT all) (NNS protists)) (VP (VBP have))))))))))))))) (. .)))
They grow by the process of binary fission which is an asexualy reproduction of cells such as those that all protists have.
(ROOT (S (NP (NP (NNP Reproduction)) (PP (IN in) (NP (JJ prokaryotic) (NNS cells)))) (VP (VBZ is) (PP (IN by) (NP (JJ binary) (NN fission) (, ,) (NN enlargement) (CC and) (NN division)))) (. .)))