( ( A polyploid ) ( ( ( is simply ) ( ( an organism ) ( that ( contains ( ( ( more ( than ( the ( usual two ) ) ) ) sets ) ( of chromosomes ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN polyploid)) (VP (VBZ is) (ADVP (RB simply)) (NP (NP (DT an) (NN organism)) (SBAR (WHNP (WDT that)) (S (VP (VBZ contains) (NP (NP (QP (JJR more) (IN than) (NP (DT the) (JJ usual) (CD two))) (NNS sets)) (PP (IN of) (NP (NNS chromosomes))))))))) (. .)))
A polyploid is simply an organism that contains more than the usual two sets of chromosomes.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN polyploid)) (VP (VBZ is) (NP (NP (DT an) (NN individual)) (PP (IN with) (NP (NP (QP (JJR more) (IN than) (NP (DT the) (JJ correct) (NN number)))) (PP (IN of) (NP (NN chromosome) (NNS sets))))))) (. .)))
A(n) polyploid is an individual with more than the correct number of chromosome sets.