Download Seedless Vascular and Nonvascular Plants

• The life cycle of a moss (Bryophyta)
Raindrop
1
Spores develop into
threadlike protonemata.
Key
Male
gametophyte
Haploid (n)
Sperm
Diploid (2n)
“Bud”
4
Antheridia
2
3
Protonemata
“Bud”
Egg
Spores
Gametophore
Female
Archegonia
gametophyte
8
Peristome
Rhizoid
6
Sporangium
MEIOSIS
Seta
FERTILIZATION
Capsule
(sporangium)
Mature
Mature
sporophytes
sporophytes
(within archegonium)
Calyptra
Zygote
Embryo
Foot
Archegonium
Young
sporophyte
Capsule with
peristome (LM)
Figure 29.8
Female
gametophytes
7
5
• Bryophyte diversity
Gametophore of
female gametophyte
LIVERWORTS (PHYLUM HEPATOPHYTA)
Foot
Seta
500 µm
Sporangium
HORNWORTS (PHYLUM ANTHOCEROPHYTA)
Sporophyte
MOSSES (PHYLUM BRYOPHYTA)
Sporophyte
Gametophyte
Gametophyte
Figure 29.9
• The life cycle of a fern
1
3
2
Key
Haploid (n)
Diploid (2n)
Antheridium
Spore
MEIOSIS
Young
gametophyte
Sporangium
Archegonium
Mature
sporophyte
New
sporophyte
Egg
Zygote
Sporangium
FERTILIZATION
Sorus
6
4
Gametophyte
Fiddlehead
Figure 29.12
5
Sperm
• Seedless vascular plants
LYCOPHYTES (PHYLUM LYCOPHYTA)
Strobili
(clusters of
sporophylls)
A quillwort
A spike moss
A club moss
PTEROPHYTES (PHYLUM PTEROPHYTA)
Vegetative stem
Strobilus on
fertile stem
Figure 29.14
WHISK FERNS AND RELATIVES
HORSETAILS
FERNS