Fig. 17-0c

1
Fig. 17-0c
Diversity of plant life
Simple mosses
Charophytes (algae)
Extinct seedless plants (origin of fossil fuels)
Dry land adaptations
2
Fig. 17-1ca
Key
Vascular tissue
Spores
Leaf
Spores
Flagellated sperm
Alga Water supports alga. Whole alga performs
photo- synthesis absorbs water, CO2,
and minerals from water.
Flagellated sperm
Leaf
Stem
Stem
Roots
Fern Stomata roots anchor plants, absorb water
lignified cell walls vascular tissue fertilizati
on requires moisture
Roots
Moss Stomata only on sporophytes primitive
roots anchor plants, no lignin no vascular
tissue fertilization requires moisture
Flagellated sperm
Holdfast (anchors alga)
3
Fig. 17-1cb
Key
Vascular tissue
Pollen
Seed
Leaf
Stem
Roots
Pine tree Stomata roots anchor plants, absorb
water lignified cell walls vascular
tissue fertilization does not require moisture
4
Fig. 17-2a
Liverworts
Nonvascular plants (bryophytes)
Land plants
Origin of land plants (about 475 mya)
Ancestral green alga
Hornworts
1
Mosses
Lycophytes (club mosses, spike mosses, quillworts)
Seedless vascular plants
Origin of vascular plants (about 425 mya)
Vascular plants
2
Pterophytes (ferns, horsetails, whisk ferns)
Gymnosperms
Origin of seed plants (about 360 mya)
Seed plants
3
Angiosperms
500
450
350
300
400
0
Millions of years ago (mya)
5
Fig. 17-3-1
Key
Gametophyte plant (n)
Haploid (n) Diploid (2n)
Mitosis
Sperm
Gametes (n)
Egg
6
Fig. 17-3-2
Key
Gametophyte plant (n)
Haploid (n) Diploid (2n)
Mitosis
Sperm
Gametes (n)
Egg
Fertilization
Zygote (2n)
7
Fig. 17-3-3
Key
Gametophyte plant (n)
Haploid (n) Diploid (2n)
Mitosis
Sperm
Gametes (n)
Egg
Fertilization
Zygote (2n)
Mitosis
Sporophyte plant (2n)
8
Fig. 17-3-4
Key
Gametophyte plant (n)
Haploid (n) Diploid (2n)
Mitosis
Sperm
Spores (n)
Gametes (n)
Egg
Fertilization
Meiosis
Zygote (2n)
Mitosis
Sporophyte plant (2n)
9
Fig. 17-3-5
Key
Gametophyte plant (n)
Haploid (n) Diploid (2n)
Mitosis
Mitosis
Sperm
Spores (n)
Gametes (n)
Egg
Fertilization
Meiosis
Zygote (2n)
Mitosis
Sporophyte plant (2n)
10
Fig. 17-8b
Stigma
Anther
Style
Carpel
Stamen
Ovary
Filament
Petal
Sepal
Ovule
Receptacle
11
Fig. 17-9-1
Haploid spores in anthers develop into pollen
grains male gametophytes.
1
Pollen grains (n)
Meiosis
Haploid spore in each ovule develops into female
gameto- phyte, which produces an egg.
2
Meiosis
Egg (n)
Ovule
Key
Haploid (n) Diploid (2n)
12
Fig. 17-9-2
Haploid spores in anthers develop into pollen
grains male gametophytes.
1
Pollen grains (n)
Pollination and growth of pollen tube
3
Meiosis
Stigma
Haploid spore in each ovule develops into female
gameto- phyte, which produces an egg.
2
Pollen grain
Pollen tube
Meiosis
Egg (n)
Ovule
Sperm
Fertilization
Key
Haploid (n) Diploid (2n)
13
Fig. 17-9-3
Haploid spores in anthers develop into pollen
grains male gametophytes.
1
Pollen grains (n)
Pollination and growth of pollen tube
3
Meiosis
Stigma
Haploid spore in each ovule develops into female
gameto- phyte, which produces an egg.
2
Pollen grain
Pollen tube
Meiosis
Egg (n)
Ovule
Sperm
Fertilization
Key
Haploid (n) Diploid (2n)
Zygote (2n)
4
14
Fig. 17-9-4
Haploid spores in anthers develop into pollen
grains male gametophytes.
1
Pollen grains (n)
Pollination and growth of pollen tube
3
Meiosis
Stigma
Haploid spore in each ovule develops into female
gameto- phyte, which produces an egg.
2
Pollen grain
Pollen tube
Meiosis
Egg (n)
Ovule
Sperm
Seeds
Fruit (mature ovary)
6
Food supply
Fertilization
Seed coat
Key
Haploid (n) Diploid (2n)
Seed
5
Zygote (2n)
4
Embryo (2n)
15
Fig. 17-9-5
Haploid spores in anthers develop into pollen
grains male gametophytes.
1
Pollen grains (n)
Pollination and growth of pollen tube
3
Meiosis
Stigma
Haploid spore in each ovule develops into female
gameto- phyte, which produces an egg.
2
Pollen grain
Stigma
Pollen tube
Anther
Meiosis
Egg (n)
Ovule
Ovary
Ovule
Sporophyte (2n)
Sperm
7
Seed germinates, and embryo grows into plant.
Seeds
Fruit (mature ovary)
6
Food supply
Fertilization
Seed coat
Key
Haploid (n) Diploid (2n)
Seed
5
Zygote (2n)
4
Embryo (2n)
16
Fig. 17-10b
Seed dispersals and pollination are the result of
coevolution of plants and animals
17
Fig. 17-13a