( ( ( ( ( ( All these ) ( are ( ( ( ( low ( cost exercises ) ) and ) yet ) ( ( the ( structural organization ) ) ( of ( ( ( plant cells ) , ) tissues ) ) ) ) ) ) , ) and ) ( organs ( ( can readily ) ( be studied ) ) ) ) . )
(ROOT (S (S (NP (PDT All) (DT these)) (VP (VBP are) (NP (NP (JJ low) (NN cost) (NNS exercises)) (CC and) (RB yet) (NP (NP (DT the) (JJ structural) (NN organization)) (PP (IN of) (NP (NP (NN plant) (NNS cells)) (, ,) (NP (NNS tissues)))))))) (, ,) (CC and) (S (NP (NNS organs)) (VP (MD can) (ADVP (RB readily)) (VP (VB be) (VP (VBN studied))))) (. .)))
All these are low cost exercises and yet the structural organization of plant cells, tissues, and organs can readily be studied.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN cell)) (VP (VBZ is) (NP (NP (DT the) (JJS lowest) (NN level)) (PP (IN of) (NP (NN organism))) (SBAR (WHNP (WDT that)) (S (VP (MD can) (VP (VB perform) (NP (NP (DT all) (NNS activities)) (VP (VBN required) (PP (IN for) (NP (NN life))))))))))) (. .)))