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Page 1: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-1

Page 2: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Table 29-1

Page 3: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-7

Origin of land plants (about 475 mya)1

2

3

1

2

3

Origin of vascular plants (about 420 mya)

Origin of extant seed plants (about 305 mya)

ANCES-TRALGREENALGA

Liverworts

Hornworts

Mosses

Lycophytes (club mosses,spike mosses, quillworts)

Pterophytes (ferns,horsetails, whisk ferns)

Gymnosperms

Angiosperms

Seed

plan

tsS

eedless

vascular

plan

ts

No

nvascu

larp

lants

(bryo

ph

ytes)

Lan

d p

lants

Vascu

lar plan

ts

Millions of years ago (mya)

500 450 400 350 300 50 0

Page 4: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-9d

Gametophyte

Seta

CapsuleSporophyte(a sturdyplant thattakes monthsto grow)

Polytrichum commune,hairy-cap moss

Page 5: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-9c

An Anthoceroshornwort species

Sporophyte

Gametophyte

Page 6: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-9a

ThallusGametophore offemale gametophyte

Marchantia polymorpha,a “thalloid” liverwort

Marchantia sporophyte (LM)

Sporophyte

Foot

Seta

Capsule(sporangium)

500

µm

Page 7: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-9b

Plagiochiladeltoidea,a “leafy”liverwort

Page 8: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-5c

SporesSporangium

Sporophyte

Longitudinal section ofSphagnum sporangium (LM)

Gametophyte

Sporophytes and sporangia of Sphagnum (a moss)

Page 9: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-11a

(a) Peat being harvested

Page 10: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-11b

(b) “Tollund Man,” a bog mummy

Page 11: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-8-3

Key

Haploid (n)

Diploid (2n) Protonemata(n)

“Bud”

“Bud”

Malegametophyte(n)

Femalegametophyte (n)

Gametophore

Rhizoid

Spores

Sporedispersal

Peristome

Sporangium

MEIOSIS SetaCapsule(sporangium)

Foot

Maturesporophytes

Capsule withperistome (SEM)

Femalegametophytes

2 m

m

Raindrop

Sperm

Antheridia

Egg

Archegonia

FERTILIZATION

(within archegonium)Zygote(2n)

Embryo

Archegonium

Youngsporophyte(2n)

Page 12: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-5a

Gametophyte(n)

Gamete fromanother plant

n

n

Mitosis

Gamete

FERTILIZATIONMEIOSIS

Mitosis

Sporen

n

2n Zygote

Mitosis

Sporophyte(2n)

Alternation of generations

Page 13: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-15b

Selaginella apoda,a spike moss

1 cm

Page 14: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-15c

Isoetesgunnii, a quillwort

Page 15: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-15d

Strobili(clusters ofsporophylls)

Diphasiastrum tristachyum, a club moss

2.5 cm

Page 16: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-15f

Athyriumfilix-femina,lady fern

25 c

m

Page 17: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-15g

Equisetumarvense,fieldhorsetail

Vegetative stem

Strobilus onfertile stem

1.5

cm

Page 18: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-15h

2.5

cm

Psilotumnudum,a whiskfern

Page 19: Fig. 29-1. Table 29-1 Fig. 29-7 Origin of land plants (about 475 mya) 1 2 3 1 2 3 Origin of vascular plants (about 420 mya) Origin of extant seed plants

Fig. 29-13-3

Key

Haploid (n)

Diploid (2n)

MEIOSISSporedispersal

Sporangium

SporangiumMaturesporophyte(2n)

Sorus

Fiddlehead

Spore(n)

Younggametophyte

Maturegametophyte(n) Archegonium

Egg

Antheridium

Sperm

FERTILIZATION

Newsporophyte

Gametophyte

Zygote(2n)


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