1. Moss Life Cycle Figure 29.8 The life cycle of a moss Raindrop Sperm
“Bud”
Antheridia
Male
gametophyte
(n)
Key
Haploid (n)
Protonemata
(n)
Diploid (2n)
“Bud”
Egg
Spores
Gametophore
Archegonia
Spore
dispersal
Female
gametophyte (n)
Rhizoid
Peristome
Sporangium
FERTILIZATION
Figure 29.8 The life cycle of a moss
MEIOSIS
(within archegonium)
Seta
Zygote
(2n)
Capsule
(sporangium)
Mature
sporophytes
Foot
Embryo
Archegonium
Young
sporophyte
(2n)
2 mm
Capsule with
peristome (SEM)
Female
gametophytes

2. Fern Life Cycle Key Haploid (n) Diploid (2n) Spore (n) Antheridium
Young
gametophyte
Spore
dispersal
MEIOSIS
Sporangium
Mature
gametophyte
(n)
Sperm
Archegonium
Egg
Mature
sporophyte
(2n)
Sporangium
New
sporophyte
Zygote
(2n)
FERTILIZATION
Sorus
Figure The life cycle of a fern
Gametophyte
Fiddlehead

3. Pine Life Cycle Key Haploid (n) Ovule Diploid (2n) Ovulate cone
Megasporocyte (2n)
Integument
Pollen cone
Microsporocytes (2n)
Mature sporophyte (2n)
Megasporangium (2n)
Pollen grain
Pollen grains (n)
MEIOSIS
MEIOSIS
Microsporangia
Microsporangium (2n)
Surviving megaspore (n)
Seedling
Archegonium
Figure 30.6 The life cycle of a pine
Seeds
Female gametophyte
Food reserves (n)
Sperm nucleus (n)
Seed coat (2n)
Pollen tube
Embryo (2n)
FERTILIZATION
Egg nucleus (n)

4. Stigma Carpel Stamen Anther Style Filament Ovary Petal Sepal Ovule
Fig. 30-7
Stigma
Carpel
Stamen
Anther
Style
Filament
Ovary
Figure 30.7 The structure of an idealized flower
Petal
Sepal
Ovule

5. Mature flower on sporophyte plant (2n) Microsporocytes (2n)
Fig
Key
Haploid (n)
Diploid (2n)
Microsporangium
Anther
Mature flower on sporophyte plant (2n)
Microsporocytes (2n)
MEIOSIS
Generative cell
Microspore (n)
Ovule (2n)
Tube cell
Male gametophyte (in pollen grain) (n)
Ovary
Pollen grains
MEIOSIS
Germinating seed
Stigma
Megasporangium (2n)
Pollen tube
Embryo (2n) Endosperm (3n) Seed coat (2n)
Sperm
Seed
Megaspore (n)
Style
Antipodal cells Central cell Synergids Egg (n)
Figure The life cycle of an angiosperm
Female gametophyte (embryo sac)
Pollen tube
Sperm (n)
Nucleus of developing endosperm (3n)
FERTILIZATION
Zygote (2n)
Egg nucleus (n)
Discharged sperm nuclei (n)