( ( Unlike ( many ( higher plants ) ) ) ( , ( ( ( ( ( ( ( ( ( gametophyte ( sexual development ) ) , ) ( swimming sperm ) ) , ) fertilization ) , ) and ) ( embryo development ) ) ( ( are ( directly ( visible ( using ( a ( ( ( stereomicroscope and ) simple ) ( culture equipment ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Unlike) (NP (JJ many) (JJR higher) (NNS plants))) (, ,) (NP (NP (JJ gametophyte) (JJ sexual) (NN development)) (, ,) (NP (NN swimming) (NN sperm)) (, ,) (NP (NN fertilization)) (, ,) (CC and) (NP (NN embryo) (NN development))) (VP (VBP are) (ADJP (RB directly) (JJ visible) (S (VP (VBG using) (NP (DT a) (ADJP (JJ stereomicroscope) (CC and) (JJ simple)) (NN culture) (NN equipment)))))) (. .)))
Unlike many higher plants, gametophyte sexual development, swimming sperm, fertilization, and embryo development are directly visible using a stereomicroscope and simple culture equipment.
(ROOT (S (NP (DT The) (NN embryo)) (VP (VBZ develops) (PP (IN in) (NP (NP (DT a) (NN plant)) (PP (IN inside) (NP (DT the) (JJ female) (NN plant))))) (PP (IN after) (NP (NN fertilization)))) (. .)))