( ( ( ( ( Plants ( may ( ( reproduce sexually ) ( by ( ( ( flowering and ) producing ) seeds ) ) ) ) ) , ) or ) ( ( ( through ( spore production ) ) . ) ( They ( also ( ( reproduce asexually ) ( through ( ( ( ( ( budding , ) ( bulb formation ) ) , ) and ) ( ( other types ) ( of ( vegetative reproduction ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Plants)) (VP (MD may) (VP (VB reproduce) (ADVP (RB sexually)) (PP (IN by) (S (VP (VBG flowering) (CC and) (VBG producing) (NP (NNS seeds)))))))) (, ,) (CC or) (S (FRAG (PP (IN through) (NP (JJ spore) (NN production))) (. .)) (NP (PRP They)) (VP (ADVP (RB also)) (VBD reproduce) (ADVP (RB asexually)) (PP (IN through) (NP (NP (VBG budding)) (, ,) (NP (NN bulb) (NN formation)) (, ,) (CC and) (NP (NP (JJ other) (NNS types)) (PP (IN of) (NP (JJ vegetative) (NN reproduction)))))))) (. .)))
Plants may reproduce sexually by flowering and producing seeds, or through spore production. They also reproduce asexually through budding, bulb formation, and other types of vegetative reproduction.
(ROOT (S (NP (NP (DT A) (NN method)) (PP (IN of) (NP (NP (JJ sexual) (NN reproduction)) (SBAR (WHNP (WDT that)) (S (VP (VBZ occurs) (PP (IN in) (NP (NNS plants))))))))) (VP (MD can) (VP (VB be) (VP (VBN described) (SBAR (IN as) (S (NP (NNS seeds)) (VP (VBP are) (VP (VBN produced) (PP (IN from) (NP (NP (DT the) (NN flower)) (PP (IN of) (NP (DT the) (NN plant)))))))))))) (. .)))