Bio Lab 6 - Angiosperm Flowers Flashcards
(34 cards)
Phylum Anthophyta
Flowering
Called Angiosperm (vessel seed)
Vessel = ovary = fruit
Most widespread plant family
Angiosperm Advantages
Most efficient xylem Shorter generations Use pollinators Precise speed dispersal Seeds Pollen tube Defensive chemicals Flowers Fruit Xylem
Angiosperm Architecture
4 Whorls:
- Sepals
- PEtals
- Stamens
- Carpels
Sepals
Outermost layer
Green
Structure called Calyx
Petals
Colorful
Attract pollinators
Produce nectar to attract pollinators
Collectively called Coralla
Stamen
Male parts
Produce pollen
On filament called Anther
Group called Androecium
Carpels
Female parts Stigma receives pollen Ovule = seed production Ovary = fruit production Gynoecium = group of carpels
Perfect
Male and female parts both in one flower
Complete
All 4 whorls Sepals Petals Stamen Carpels
Monocot
1 Cotyledon 3 flower petals parallel leaf veins no wood xylem spread around
Eudicot
2 Cotyledon 4 or 5 petals branched leaf veins sometimes woody Xylem grouped in center
Tepal
Sepal + Petal
When Sepal looks like petal
Ovary positions
Ovary above flower: superior
Ovary below flower: Inferior
Flower above ovary: epigynous
Flower below ovay: hypogyneous
Symmetry
Bilateral
Radial
Fusion
Connate: fused to like parts
Adnate: fused to unlike parts
Inflorescence
Group of flowers
Disk flower: center of flower
Ray: outer ring of flower
Fruit descriptions
Fleshy or Dry
Fleshy Fruit, Simple
Thin skin, single ovary Berry Drupe Pome Pepo Hesperidian
Fleshy Fruit, Complex
Aggregate
Multiple
Berry
Simple, Fleshy
Thin skin
blueberry
Drupe
Simple
fleshy
has pit
plum
Pome
simple fleshy few seeds inferior ovary apple
Pepo
simple fleshy thick skin 100s of skins squash, melon
Hesperidian
simple fleshy thick skin few seeds peelable citrus
