fig. 17-0c diversity of plant life charophytes (algae) extinct seedless plants (origin of fossil...
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Fig. 17-0c
Diversity of plant life
Charophytes (algae)
Extinct seedless plants(origin of fossil fuels)
Simple mosses
Dry land adaptations
Fig. 17-1ca
Flagellatedsperm
Stem
Leaf
FernStomata; roots anchor plants,absorb water; lignified cellwalls; vascular tissue;fertilization requires moisture
Roots
MossStomata only on sporophytes; primitive roots anchor plants,no lignin; no vascular tissue;fertilization requires moisture
Spores
Flagellatedsperm
Leaf
Stem
Roots
Flagellatedsperm
Vasculartissue
Key
Holdfast(anchors alga)
AlgaWater supportsalga. Whole algaperforms photo-synthesis;absorbs water,CO2, andminerals fromwater.
Spores
Fig. 17-1cb
Leaf
Seed
Pollen
Stem
Roots
Pine treeStomata; roots anchor plants, absorb water; lignified cell walls; vascular tissue;fertilization does not require moisture
Vasculartissue
Key
Fig. 17-2a
Ancestralgreenalga
Origin of land plants(about 475 mya)
1
Origin of vascular plants(about 425 mya)
2
Origin of seed plants(about 360 mya)
3
Mosses
Lycophytes (club mosses,spike mosses, quillworts)
Pterophytes (ferns,horsetails, whisk ferns)
Gymnosperms
Angiosperms
Millions of years ago (mya)
500 450 350 300400 0
Se
ed
pl a
nts
Liverworts
Hornworts
Se
ed
les
s
va
sc
ula
rp
l an
ts
No
nv
as
cu
lar
pl a
nts
(bry
op
hy
tes
)
Va
sc
ula
r pla
nts
La
nd
pl a
nt s
Fig. 17-3-1
Haploid (n)
Diploid (2n)
Key Gametophyteplant (n)
Gametes (n)
Sperm
Egg
Mitosis
Fig. 17-3-2
Haploid (n)
Diploid (2n)
Key Gametophyteplant (n)
Gametes (n)
Sperm
Egg
Fertilization
Zygote (2n)
Mitosis
Fig. 17-3-3
Haploid (n)
Diploid (2n)
Key Gametophyteplant (n)
Gametes (n)
Sperm
Egg
Fertilization
Zygote (2n)
Sporophyteplant (2n)
Mitosis
Mitosis
Fig. 17-3-4
Haploid (n)
Diploid (2n)
Key Gametophyteplant (n)
Gametes (n)
Sperm
Egg
Fertilization
Zygote (2n)
Sporophyteplant (2n)
Meiosis
Spores (n)
Mitosis
Mitosis
Fig. 17-3-5
Haploid (n)
Diploid (2n)
Key Gametophyteplant (n)
Gametes (n)
Sperm
Egg
Fertilization
Zygote (2n)
Sporophyteplant (2n)
Meiosis
Spores (n)
Mitosis
Mitosis
Mitosis
Fig. 17-8b
Stamen
Anther
Filament
Petal
Receptacle
Ovule
Sepal
Stigma
Style
Ovary
Carpel
Fig. 17-9-1
Meiosis
1
Egg (n)
Haploid spores in anthers develop intopollen grains: male gametophytes.
Meiosis
Pollen grains (n)
Ovule
Haploid (n)
Diploid (2n)
Key
2 Haploid spore in each ovuledevelops into female gameto-phyte, which produces an egg.
Fig. 17-9-2
Meiosis
1
Haploid (n)
Diploid (2n)
Key
Egg (n)
Sperm
Haploid spores in anthers develop intopollen grains: male gametophytes.
2
Meiosis
Pollen grains (n)
Ovule
Haploid spore in each ovuledevelops into female gameto-phyte, which produces an egg.
3 Pollination andgrowth of pollen tube
Stigma
Pollen grain
Pollen tube
Fertilization
Fig. 17-9-3
Meiosis
1
Haploid (n)
Diploid (2n)
Key
Egg (n)
Fertilization
Sperm
Zygote(2n)
Haploid spores in anthers develop intopollen grains: male gametophytes.
2
Meiosis
Pollen grains (n)
Ovule
Haploid spore in each ovuledevelops into female gameto-phyte, which produces an egg.
3 Pollination andgrowth of pollen tube
Stigma
Pollen grain
Pollen tube
4
Fig. 17-9-4
Meiosis
1
Haploid (n)
Diploid (2n)
Key
Egg (n)
Fertilization
Sperm
Seed coat
Zygote(2n)
Food supply
Embryo (2n)
Seeds
Haploid spores in anthers develop intopollen grains: male gametophytes.
2
Meiosis
Pollen grains (n)
Ovule
Haploid spore in each ovuledevelops into female gameto-phyte, which produces an egg.
3 Pollination andgrowth of pollen tube
Stigma
Pollen grain
Pollen tube
4
Fruit(matureovary)
6
Seed5
Fig. 17-9-5
Meiosis
1
Haploid (n)
Diploid (2n)
Key
Egg (n)
Fertilization
Sperm
Seed coat
Zygote(2n)
Food supply
Embryo (2n)
Seeds
Haploid spores in anthers develop intopollen grains: male gametophytes.
2
Meiosis
Pollen grains (n)
Ovule
Haploid spore in each ovuledevelops into female gameto-phyte, which produces an egg.
3 Pollination andgrowth of pollen tube
Stigma
Pollen grain
Pollen tube
4
Fruit(matureovary)
6
Seed5
OvaryOvule
Stigma
Anther
Sporophyte (2n)
Seed germinates,and embryogrows intoplant.
7
Fig. 17-10b
Seed dispersals and pollination are the result of coevolution of plants and animals
Fig. 17-13a