Define the following terms: flower, sepals, petals, stamens, pistil.
Flower: shoot bearing sporophylls (stamens, carpels)
Sepals: leaf like, green, protect bud
Petals: leaf like, non green, bright
Stamens: filament + anther
Pistil: 1 or more carpels consisting of stigma + style + ovary
Sepals: leaf like, green, protect bud
Petals: leaf like, non green, bright
Stamens: filament + anther
Pistil: 1 or more carpels consisting of stigma + style + ovary
Tags: angiosperms, flower, petals, pistil, sepals, stamens
Quelle:
Quelle:
What did sepals evolve from? Petals? Stamens? Carpels?
Sepals: Modified leaves
Petals: modified leaves OR stamens that lost sporangia
Stamens: reduced microsporophylls OR branches with terminal sporangia
Carpels: folded megasporophylls
Petals: modified leaves OR stamens that lost sporangia
Stamens: reduced microsporophylls OR branches with terminal sporangia
Carpels: folded megasporophylls
Tags: angiosperms, evolution, flowers, sepals, stamens
Quelle:
Quelle:
Describe floral symmetry and ovary positions.
Floral symmetry: Radial, bilateral
Ovary position: superior, inferior
Ovary position: superior, inferior
Tags: floral symetry, ovary position
Quelle:
Quelle:
What is a "perfect" flower? A pistillate flower? A staminate flower?
Has both male, female parts. I.E: has stamens and pistils
Pistillate: lack stamens (female flower)
Staminate: lack pistils (male flower)
Pistillate: lack stamens (female flower)
Staminate: lack pistils (male flower)
Tags: angiosperms, flowers
Quelle:
Quelle:
Describe the evolutionary trends of primitive flowers (floral parts, completeness, organ arrangement, ovary position, symmetry):
Floral parts: many, indefinite #
Completeness: complete
Organ arrangement: spiral
Ovary: superior
Symmetry: radial
Completeness: complete
Organ arrangement: spiral
Ovary: superior
Symmetry: radial
Tags: angiosperms, evolution, flowers, trends
Quelle:
Quelle:
Describe the evolutionary trends of advanced flowers (floral parts, completeness, organ arrangement, ovary position, symmetry):
Floral parts: few, definite #
Completeness: incomplete
Organs: shortened
Ovary: inferior
Symmetry: bilateral
Completeness: incomplete
Organs: shortened
Ovary: inferior
Symmetry: bilateral
Tags: advanced, angiosperms, evolution
Quelle:
Quelle:
Describe Orchiaceae (species #, pollination, mono/di))
Monocot
24000 species
Complex flowers pollinated by specialist animals.
24000 species
Complex flowers pollinated by specialist animals.
Tags: monocot, orchidaceae
Quelle:
Quelle:
Describe Asteraceae (species, mono/di, pollination, flower type)
Eudicot
22000 species
2 flower types, grouped into flower-like inflorescences
generalist pollinators
22000 species
2 flower types, grouped into flower-like inflorescences
generalist pollinators
Tags: asteraceae, eudicots
Quelle:
Quelle:
Define inflorescence. Advantages?
cluster of flowers combined in a single structure.
- economy of scale associated with attraction, reward, physical support of pollinators.
- economy of scale associated with attraction, reward, physical support of pollinators.
Tags: definition, infloresence
Quelle:
Quelle:
Tags: angiosperms, pollination
Quelle:
Quelle:
Sexual reproduction may involve selfing or outcrossing. What are these?
Selfing: pollination between anthers, pistil on 1 plant
Outcrossing: pollination between anthers, pistils on separate plants
Outcrossing: pollination between anthers, pistils on separate plants
Tags: angiosperms, flowers, sexual reproduction
Quelle:
Quelle:
What are 3 mechanisms that may promote outcrossing?
1. Genetic self-incompatibility
2. spatial separation of sexes
3. temporal separation of sexes
2. spatial separation of sexes
3. temporal separation of sexes
Tags: angiosperms, flowers, outcrossing, sexual reproduction
Quelle:
Quelle:
Define protandry vs. protogyny.
Protandry: pollen shed before stigma receptive
Protogyny: stigma receptive before pollen shed.
Protogyny: stigma receptive before pollen shed.
Tags: angiosperms, flowers, protandry, protogyna
Quelle:
Quelle:
Fruits consist of 3 layers, which are:
- exocarp (outer skin)
- mesocarp (middle flesh)
- endocarp (inner stone)
- mesocarp (middle flesh)
- endocarp (inner stone)
Tags: angiosperms, fruits
Quelle:
Quelle:
What are 3 traits that fruits are classified with?
fleshy vs. dry
dehiscent vs. indehiscent
single vs. multi seeded
dehiscent vs. indehiscent
single vs. multi seeded
Tags: classification, dehiscent, dry, fleshy, fruits, indehiscent
Quelle:
Quelle:
Kartensatzinfo:
Autor: zeestree
Oberthema: Biology
Thema: Flowers and Fruits
Schule / Uni: University of Hawaii at Manoa
Ort: Honolulu
Veröffentlicht: 20.04.2010
Schlagwörter Karten:
Alle Karten (15)
advanced (1)
angiosperms (10)
asteraceae (1)
classification (1)
definition (1)
dehiscent (1)
dry (1)
eudicots (1)
evolution (3)
fleshy (1)
floral symetry (1)
flower (1)
flowers (6)
fruits (2)
indehiscent (1)
infloresence (1)
monocot (1)
orchidaceae (1)
outcrossing (1)
ovary position (1)
petals (1)
pistil (1)
pollination (1)
protandry (1)
protogyna (1)
sepals (2)
stamens (2)
trends (1)
