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Fig. 22-15b, p. 396
archegonium egg cell
neck
neck canal venter stalk
Fig. 22-15c, p. 396
zygote grows
and develops
into a
sporoph来自百度文库te
zygote
(attached to gametophyte)
tip or operculum capsule
Fig. 22-17b, p. 398
peristome teeth
Fig. 22-17c, p. 398
peristome teeth capsule
Fig. 22-17d, p. 398
1 mm stem
1 mm
stem
Fig. 22-8b, p. 392
pore and air chamber
epidermis chlorenchyma
parenchyma
Fig. 22-9, p. 392
gametophyte gemmae cups thallus
Fig. 22-10, p. 393
Fig. 22-13, p. 394
leptoids
outside
hydroid
center
Fig. 22-14, p. 395
archegonial head stem
antheridial head leaves
rhizoids
Fig. 22-15a, p. 396
paraphyses
antheridia
Fertilization
raindrops transport sperm to archegonium
mature sporophyte (capsule and seta)
Diploid (2 n)
Meiosis
Haploid ( n) spores form, develop, and are released
Chara Coleochaete
Other green algae
Fig. 22-CO (a), p. 385
Fig. 22-2a, p. 387
Fig. 22-2b, p. 387
Fig. 22-2c, p. 387
Fig. 22-2d, p. 387
Fig. 22-2e, p. 387
ASEXUAL CYCLE
(gemmae)
rhizoid
antheridium
antheridial head
bud
on male gametophyte
spores germinate
protonema
archegonium
bud archegonial head on female gametophyte
antheridiophore
thallus
Fig. 22-11a, p. 393
thallus archegoniophore gemma cup Fig. 22-11b, p. 393
spore
protonema bud
rhizoids
Fig. 22-12, p. 394
large empty epidermal cells
antheridium
Fig. 22-4, p. 388
neck
cover cells neck canal
venter
egg cell
archegonium
Fig. 22-4a, p. 388
sterile jacket
fertile cells
antheridium
Fig. 22-4b, p. 388
Table 22-1, p. 389
Fig. 22-5a, p. 390
Fig. 22-5b, p. 390
sporophyte
columella
splitting capsule (sporangium)
gametophyte
Fig. 22-6, p. 390
columella pseudoelaters spore tetrads
Fig. 22-CO (b), p. 385
Bryophytes Liverworts
Hornworts
Mosses
Vascular plants
lignin at least 475 million years ago
Charophytes Other charophytes
cuticle sporophyte multicellular gametangia
sporangium calyptra
sporophyte
seta
leafy gametophyte
rhizoids
Fig. 22-3, p. 388
neck
cover cells neck canal
venter
egg cell
archegonium
sterile jacket fertile cells
sporocytes
sporangium (capsule)
meristematic region gametophyte tissue
foot
Fig. 22-7, p. 391
Fig. 22-8a, p. 392
top surface of leaves
4 mm
top leaves
underside leaf
the spores grow and develop into male or female gametophytes
Fig. 22-16, p. 397
operculum peristome teeth
spores columella
seta (stalk)
Fig. 22-17a, p. 398