( Suckering ( ( is ( ( ( a form ) ( of ( asexual reproduction ) ) ) ( ( in which ) ( ( ( a number ) ( of stems ) ) ( are ( ( produced ( from ( a ( single ( root system ) ) ) ) ) ( to ( form ( a clone ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Suckering)) (VP (VBZ is) (NP (NP (DT a) (NN form)) (PP (IN of) (NP (JJ asexual) (NN reproduction))) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (NP (DT a) (NN number)) (PP (IN of) (NP (NNP stems)))) (VP (VBP are) (VP (VBN produced) (PP (IN from) (NP (DT a) (JJ single) (NN root) (NN system))) (S (VP (TO to) (VP (VB form) (NP (DT a) (NN clone))))))))))) (. .)))
Suckering is a form of asexual reproduction in which a number of stems are produced from a single root system to form a clone.
(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.