Fig. 30-2

Reduced (usually microscopic), dependent on surroundingsporophyte tissue for nutrition

Reduced, independent(photosynthetic andfree-living)

Gametophyte

Sporophyte(2n)

Sporophyte(2n)

Gametophyte(n)

Sporophyte

Example

Gametophyte(n)

Dominant

Dominant DominantReduced, dependent ongametophyte for nutrition

Mosses and othernonvascular plants

Ferns and other seedlessvascular plants

Seed plants (gymnosperms and angiosperms)

PLANT GROUP

Gymnosperm Angiosperm

Microscopic femalegametophytes (n) insideovulate cone

Microscopic malegametophytes (n) inside pollencone

Sporophyte (2n) Sporophyte (2n)

Microscopic femalegametophytes (n) insidethese partsof flowers

Microscopic malegametophytes (n) insidethese partsof flowers

Fig. 30-2c

Reduced (usually microscopic), dependent on surroundingsporophyte tissue for nutrition

Dominant

Seed plants (gymnosperms and angiosperms)

Gymnosperm AngiospermMicroscopic femalegametophytes (n) inside ovulate cone

Microscopic malegametophytes (n) inside pollencone

Sporophyte (2n) Sporophyte (2n)

Microscopic femalegametophytes (n) insidethese partsof flowers

Microscopic malegametophytes (n) insidethese partsof flowers

Example

Gametophyte

Sporophyte

Fig. 30-6-4

Microsporangium (2n)

Microsporocytes(2n)

Pollengrains (n)

Pollencone

Microsporangia

MEIOSIS

Maturesporophyte(2n)

Haploid (n)Diploid (2n)

Key

MEIOSIS

Survivingmegaspore (n)

Pollengrain

Megasporocyte (2n)

Ovule

Integument

Ovulatecone

FERTILIZATION

Pollentube

Femalegametophyte

Spermnucleus (n)

Egg nucleus (n)

Archegonium

Seedling

Seeds

Seed coat(2n)

Foodreserves(n)

Embryo(2n)

Megasporangium(2n)

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

Fig. 30-5g

Welwitschia

Ovulate cones

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

Fig. 30-8

Hazelnut

Ruby grapefruit

Tomato

Nectarine

Milkweed

Fig. 30-9

Barbs

Seeds within berries

Wings

Fig. 30-13mMonocot

CharacteristicsEudicot

Characteristics

Vascular tissueusually arranged

in ring

Veins usuallyparallel

Veins usuallynetlike

Vascular tissuescattered

Leafvenation

One cotyledon

Embryos

Two cotyledons

Stems

Roots

Pollen

Root systemusually fibrous(no main root)

Pollen grain withthree openings

Taproot (main root)usually present

Pollen grain withone opening

Floral organsusually in

multiples of three

Flowers

Floral organs usuallyin multiples of

four or five

Fig. 30-13e

Orchid

Fig. 30-13e1

Pygmy date palm (Phoenix roebelenii)

Fig. 30-13f

Lily

Fig. 30-13g

Anther

Barley

Stigma

OvaryFilament

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

Fig. 30-7

Carpel

Ovule

Sepal

Petal

Stigma

Style

Ovary

Stamen Anther

Filament

Table 30-1a