( ( ( ( ( ( The ( malaria parasite ) ) ( -LRB- ( Plasmodium -RRB- ) ) ) , ) ( for example ) ) , ) ( ( has ( ( a ( complex ( life cycle ) ) ) ( involving ( ( the alternation ) ( of ( ( ( sexually and ) ( asexually reproducing ) ) generations ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN malaria) (NN parasite)) (PRN (-LRB- -LRB-) (NP (NNP Plasmodium)) (-RRB- -RRB-)) (, ,) (PP (IN for) (NP (NN example))) (, ,)) (VP (VBZ has) (NP (NP (DT a) (JJ complex) (NN life) (NN cycle)) (PP (VBG involving) (NP (NP (DT the) (NN alternation)) (PP (IN of) (NP (UCP (ADVP (RB sexually)) (CC and) (ADJP (RB asexually) (JJ reproducing))) (NNS generations))))))) (. .)))
The malaria parasite ( Plasmodium ), for example, has a complex life cycle involving the alternation of sexually and asexually reproducing generations.
(ROOT (S (NP (NP (DT The) (NN life) (NN cycle)) (PP (IN of) (NP (NNS plants)))) (VP (VBZ is) (ADJP (RB so) (JJ complex)) (PP (RB because) (IN of) (NP (NP (DT the) (NN alternation)) (PP (IN of) (NP (NN generation)))))) (. .)))
The life cycle of plants is so complex because of the alternation of generation.