Fig. 17-0c Diversity of plant life Charophytes (algae) Extinct seedless plants (origin of fossil fuels) Simple mosses Dry land adaptations.

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