Transcript Fig. 7-0a - Hialeah Senior High School

Campbell Chapters for Plants
• Ch 38
– 38.1 only - Angiosperm Reproduction
• Ch 39
– 39.2 – Plant hormones
– 39.3 – Response to light
– 39.5 – Response to attack from herbivores
Figure 38.1
Figure 38.2
Stamen
Anther
Filament
Petal
Carpel
Stigma
Style
Ovary
Germinated pollen grain (n)
(male gametophyte)
Ovary
Ovule
Embryo sac (n)
(female gametophyte)
Anther
Pollen tube
FERTILIZATION
Sepal
Egg (n)
Sperm (n)
Receptacle
(a) Structure of an
idealized flower
Key
Zygote
(2n)
Mature sporophyte
plant (2n)
Haploid (n)
Diploid (2n)
(b) Simplified angiosperm
life cycle
Germinating
seed
Seed
Seed
Simple
fruit
Embryo (2n)
(sporophyte)
Figure 38.2a
Stamen
Anther
Filament
Petal
Stigma Carpel
Style
Ovary
Sepal
Receptacle
(a) Structure of an idealized flower
Figure 38.2b
Anther
Germinated pollen grain (n)
(male gametophyte)
Ovary
Ovule
Embryo sac (n)
(female gametophyte)
Pollen tube
FERTILIZATION
Egg (n)
Sperm (n)
Key
Zygote
(2n)
Mature sporophyte
plant (2n)
Haploid (n)
Diploid (2n)
(b) Simplified angiosperm
life cycle
Germinating
seed
Seed
Seed
Simple
fruit
Embryo (2n)
(sporophyte)
Figure 38.4a
Abiotic Pollination by Wind
Pollination by Bees
Common dandelion
under normal light
Hazel staminate flowers
(stamens only)
Hazel carpellate
flower (carpels only)
Common dandelion
under ultraviolet light
Figure 38.4b
Pollination by Moths
and Butterflies
Pollination by Flies
Pollination by Bats
Anther
Moth
Fly egg
Stigma
Moth on yucca flower
Blowfly on carrion
flower
Pollination by Birds
Hummingbird
drinking nectar of
columbine flower
Long-nosed bat feeding
on cactus flower at night
Figure 38.4ba
Anther
Moth
Stigma
Moth on yucca flower
Figure 38.4bb
Fly egg
Blowfly on carrion flower
Figure 38.4bc
Long-nosed bat feeding on
cactus flower at night
Figure 38.4bd
Hummingbird drinking nectar of columbine flower
Figure 38.5
Figure 38.6-3
2
1
Stigma
Pollen
grain
Pollen
tube
Ovule
2 sperm
Polar
nuclei
Style
Ovary
Egg
Ovule
Synergid
Polar
nuclei
Egg
Micropyle
3
Endosperm
nucleus (3n)
(2 polar nuclei
plus sperm)
2 sperm
Zygote
(2n)
Figure 38.8
Seed coat
Epicotyl
Hypocotyl
Radicle
Cotyledons
(a) Common garden bean, a eudicot with thick cotyledons
Seed coat
Endosperm
Cotyledons
Epicotyl
Hypocotyl
Radicle
(b) Castor bean, a eudicot with thin cotyledons
Scutellum
(cotyledon)
Coleoptile
Coleorhiza
Pericarp fused
with seed coat
Endosperm
Epicotyl
Hypocotyl
Radicle
(c) Maize, a monocot
Figure 38.8a
Seed coat
Epicotyl
Hypocotyl
Radicle
Cotyledons
(a) Common garden bean, a eudicot with thick cotyledons
Figure 38.9a
Foliage leaves
Cotyledon
Hypocotyl
Cotyledon
Epicotyl
Cotyledon
Hypocotyl
Hypocotyl
Radicle
Seed coat
(a) Common garden bean
Figure 38.9b
Foliage leaves
Coleoptile
Coleoptile
Radicle
(b) Maize
Figure 38.10
Stigma
Carpels
Stamen
Flower
Style
Petal
Ovary
Stamen
Sepal
Ovule
Stigma
Ovule
Pea flower
Raspberry flower
Carpel
(fruitlet)
Seed
Stigma
Ovary
Stamen
Pineapple
inflorescence
Each segment
develops
from the
carpel
of one
flower
Stamen
Ovary (in
receptacle)
Apple flower
Remains of
stamens and styles
Sepals
Seed
Pea fruit
(a) Simple fruit
Raspberry fruit
(b) Aggregate fruit
Pineapple fruit
(c) Multiple fruit
Receptacle
Apple fruit
(d) Accessory fruit
Figure 38.11a
Dispersal by Wind
Dandelion fruit
Dandelion “seeds” (actually one-seeded fruits)
Tumbleweed
Winged seed of
the tropical Asian
climbing gourd
Alsomitra macrocarpa
Winged fruit of a maple
Dispersal by Water
Coconut seed embryo,
endosperm, and endocarp
inside buoyant husk
Figure 38.11b
Dispersal by Animals
Fruit of puncture vine
(Tribulus terrestris)
Squirrel hoarding
seeds or fruits
underground
Ant carrying
seed with nutritious
“food body” to its
nest
Seeds dispersed in black bear feces
• The bending of a grass seedling toward
light
– Begins with the plant sensing the
direction, quantity, and color of the
light
Figure 39.1