( ( Asexual reproduction ) ( ( produced ( little ( genetic variety ) ) ) . ) )
(ROOT (S (NP (JJ Asexual) (NN reproduction)) (VP (VBD produced) (NP (JJ little) (JJ genetic) (NN variety))) (. .)))
Asexual reproduction produced little genetic variety.
(ROOT (S (NP (NNP Trees)) (VP (VBP send) (PRT (RP out)) (NP (NP (JJ rootlike) (NNS extensions)) (SBAR (WHNP (WDT that)) (S (VP (VBP produce) (SBAR (S (NP (JJ new) (NNS stems)) (VP (VBZ is) (NP (NP (DT an) (NN example)) (PP (IN of) (NP (JJ asexual) (NN reproduction)))))))))))) (. .)))
Trees send out rootlike extensions that produce new stems is an example of asexual reproduction.