1、Fig. 22-CO (b), p. 385.Fig. 22-CO (a), p. 385Other charophytesMossesVascular plantsligninat least 475 millionyears agocuticlesporophytemulticellular gametangiaCharaColeochaeteOther green algaeLiverwortsHornwortsBryophytesCharophytes.Fig. 22-2a, p. 387.Fig. 22-2b, p. 387.Fig. 22-2c, p. 387.Fig. 22-2d
2、, p. 387.Fig. 22-2e, p. 387.Fig. 22-3, p. 388rhizoidssporangiumcalyptrasetasporophyteleafygametophyte.Fig. 22-4, p. 388archegoniumfertilecellsneck canalegg cellneckcover cellsventersterilejacketantheridium.Fig. 22-4a, p. 388archegoniumneck canalegg cellneckcover cellsventer.Fig. 22-4b, p. 388fertile
3、cellssterilejacketantheridium.Table 22-1, p. 389.Fig. 22-5a, p. 390.Fig. 22-5b, p. 390.Fig. 22-6, p. 390gametophytesplittingcapsule(sporangium)columellasporophyte.Fig. 22-7, p. 391sporocytesgametophyte tissuefootmeristematic regionsporangium(capsule)columellapseudoelatersspore tetrads.Fig. 22-8a, p.
4、 392.Fig. 22-8b, p. 392top leavestop surfaceof leavesundersideleafstemstem4 mm1 mm1 mm.Fig. 22-9, p. 392parenchymapore and airchamberepidermischlorenchyma.Fig. 22-10, p. 393gametophytethallusgemmae cups.Fig. 22-11a, p. 393thallusantheridiophore.Fig. 22-11b, p. 393archegoniophorethallusgemma cup.Fig.
5、 22-12, p. 394rhizoidsbudprotonemaspore.Fig. 22-13, p. 394large emptyepidermal cells.Fig. 22-14, p. 395outsideleptoidshydroidcenter.Fig. 22-15a, p. 396stemrhizoidsarchegonial headantheridial headleaves.Fig. 22-15b, p. 396antheridiaparaphyses.Fig. 22-15c, p. 396archegoniumneckneck canalventerstalkegg
6、 cell.Fig. 22-16, p. 397raindropstransportsperm toarchegoniumHaploid ( n)Diploid (2 n)mature sporophyte(capsule and seta)Meiosisspores form,develop, andare releasedASEXUAL CYCLE(gemmae)rhizoidantheridial headon male gametophytebudsporesgerminateprotonemabudarchegonial head onfemale gametophytethe sp
7、ores grow anddevelop into male orfemale gametophytesarchegoniumantheridiumFertilizationzygotezygote growsand developsinto a sporophyte(attached togametophyte).Fig. 22-17a, p. 398seta (stalk)operculumperistometeethsporescolumella.Fig. 22-17b, p. 398capsuletip oroperculum.Fig. 22-17c, p. 398peristome teeth.Fig. 22-17d, p. 398peristome teethcapsule.
