( ( ( ( ( ( Most ferns ) ( reproduce sexually ) ) , ) and ) ( that ( involves ( ( meiosis and ) fertilisation ) ) ) ) . )
(ROOT (S (S (NP (JJS Most) (NNS ferns)) (VP (VB reproduce) (ADVP (RB sexually)))) (, ,) (CC and) (S (NP (DT that)) (VP (VBZ involves) (NP (NNS meiosis) (CC and) (NN fertilisation)))) (. .)))
Most ferns reproduce sexually, and that involves meiosis and fertilisation .
(ROOT (S (NP (JJS Most) (NN fish)) (VP (VB reproduce) (PP (IN with) (NP (CD one) (DT another))) (ADVP (RB sexually))) (. .)))