figure 30.1 three variations on gametophyte/sporophyte relationships
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Ch
aro
ph
yc
ean
s
Bry
op
hyt
es
(n
on
vas
cu
lar
pla
nts
)
Se
edle
ss v
as
cula
r p
lan
ts
Gy
mn
os
per
ms
An
gio
sp
erm
s
Ch
aro
ph
yce
ans
Bry
oph
yte
s (n
onv
asc
ula
r pl
ant
s)
Se
edle
ss v
asc
ula
r pl
ant
s
Gym
no
spe
rms
An
gio
spe
rms
Amborella trichopoda Water lily (Nymphaea “Rene Gerard”)
Star anise (Illicium floridanum)
BASAL ANGIOSPERMS
HYPOTHETICAL TREE OF FLOWERING PLANTS
MAGNOLIIDS
Am
bo
rell
a
Wat
er l
ilie
s
Sta
r an
ise
and
rel
ativ
es
Mag
no
liid
s
Mo
no
co
ts
Eu
dic
ots
Southern magnolia (Magnoliagrandiflora)
Orchid(Lemboglossumrossii)
MonocotCharacteristics
Embryos
Leafvenation
Stems
Root
Pollen
Flowers
Pollen grain withone opening
Root systemUsually fibrous(no main root)
Vascular tissuescattered
Veins usuallyparallel
One cotyledon Two cotyledons
Veins usuallynetlike
Vascular tissueusually arranged
in ring
Taproot (main root)usually present
Pollen grain withthree openings
Zucchini (CucurbitaPepo), female(left) and male flowers
Pea (Lathyrus nervosus,Lord Anson’s blue pea),a legume
Dog rose (Rosa canina), a wild rose
Pygmy date palm (Phoenix roebelenii)
Lily (Lilium“Enchant-ment”)
Barley (Hordeum vulgare), a grass
Anther
Stigma
Californiapoppy(Eschscholziacalifornica)
Pyrenean oak(Quercuspyrenaica)
Floral organsusually in
multiples of three
Floral organs usuallyin multiples of
four or fiveFilament Ovary
EudicotCharacteristics
MONOCOTS EUDICOTS
Figure 30.18 Flower-pollinator relationships: Scottish broom flower and honeybee (left), hummingbird (top right), baobab tree and bat (bottom right)
top related