Fig. 30-2

PLANT GROUP Mosses and othernonvascular plants Ferns and other seedlessvascular plants Seed plants (gymnosperms and angiosperms) Reduced, independent(photosynthetic andfree-living) Reduced (usually microscopic), dependent on surroundingsporophyte tissue for nutrition Gametophyte Dominant Reduced, dependent ongametophyte for nutrition Sporophyte Dominant Dominant Fig. 30-2 Gymnosperm Angiosperm Sporophyte(2n) Microscopic femalegametophytes (n) insideovulate cone Microscopic femalegametophytes (n) insidethese partsof flowers Sporophyte(2n) Gametophyte(n) Example Microscopic malegametophytes (n) insidethese partsof flowers Microscopic malegametophytes (n) inside pollencone Sporophyte (2n) Sporophyte (2n) Gametophyte(n)

Seed plants (gymnosperms and angiosperms) Reduced (usually microscopic), dependent on surroundingsporophyte tissue for nutrition Gametophyte Dominant Sporophyte Gymnosperm Angiosperm Fig. 30-2c Microscopic femalegametophytes (n) inside ovulate cone Microscopic femalegametophytes (n) insidethese partsof flowers Microscopic malegametophytes (n) insidethese partsof flowers Example Microscopic malegametophytes (n) inside pollencone Sporophyte (2n) Sporophyte (2n)

Key Haploid (n) Ovule Diploid (2n) Ovulatecone Megasporocyte (2n) Integument Pollencone Microsporocytes(2n) Megasporangium(2n) Maturesporophyte(2n) Fig. 30-6-4 Pollengrain Pollengrains (n) MEIOSIS MEIOSIS Microsporangia Microsporangium (2n) Survivingmegaspore (n) Seedling Archegonium Femalegametophyte Seeds Foodreserves(n) Spermnucleus (n) Seed coat(2n) Pollentube Embryo(2n) FERTILIZATION Egg nucleus (n)

Fig. 30-5a Cycas revoluta

Fig. 30-5b Ginkgo bilobapollen-producing tree

Fig. 30-5c Ginkgo bilobaleaves and fleshy seeds

Fig. 30-5d Gnetum

Fig. 30-5e Ephedra

Fig. 30-5f Welwitschia

Ovulate cones Fig. 30-5g Welwitschia

Fig. 30-5h Douglas fir

Fig. 30-5i European larch

Fig. 30-5j Bristlecone pine

Fig. 30-5k Sequoia

Fig. 30-5l Wollemi pine

Fig. 30-5m Common juniper

Tomato Ruby grapefruit Fig. 30-8 Nectarine Hazelnut Milkweed

Wings Fig. 30-9 Seeds within berries Barbs

MonocotCharacteristics EudicotCharacteristics Embryos One cotyledon Two cotyledons Leafvenation Veins usuallyparallel Veins usuallynetlike Fig. 30-13m Stems Vascular tissueusually arrangedin ring Vascular tissuescattered Roots Taproot (main root)usually present Root systemusually fibrous(no main root) Pollen Pollen grain withone opening Pollen grain withthree openings Flowers Floral organsusually inmultiples of three Floral organs usuallyin multiples of four or five

Fig. 30-13e Orchid

Fig. 30-13e1 Pygmy date palm (Phoenix roebelenii)

Fig. 30-13f Lily

Barley Fig. 30-13g Anther Stigma Ovary Filament

Fig. 30-13h California poppy

Fig. 30-13i Pyrenean oak

Fig. 30-13j Dog rose

Fig. 30-13k Snow pea

Fig. 30-13l Zucchini flowers

Fig. 30-13b Water lily

Fig. 30-13c Star anise

Fig. 30-13a Amborella trichopoda

Stigma Carpel Stamen Anther Style Filament Ovary Fig. 30-7 Petal Sepal Ovule

Table 30-1a

Fig. 30-2

Fig. 30-2

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