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Basic Flower Structure - PowerPoint PPT Presentation


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Basic Flower Structure. stigma. carpel. gynoecium. Flower is perfect Flower is monoecious. locule. style. pollen. ovary. ovule. anther. filament. stamen. androecium. petal. corolla. sepal. perianth. receptacle. calyx. Perianth is complete. pedicel. Some Example Stories:.

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PowerPoint Slideshow about 'Basic Flower Structure' - daniel_millan


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slide1

Basic Flower Structure

stigma

carpel

gynoecium

Flower is perfect

Flower is monoecious

locule

style

pollen

ovary

ovule

anther

filament

stamen

androecium

petal

corolla

sepal

perianth

receptacle

calyx

Perianth is complete

pedicel

slide2

Some Example Stories:

Perfect Flowers: Pea exclusively self-pollinating

Hibiscus self-pollinating if not crossed

Cherry self-incompatible only outcrosses

Imperfect Flowers: Begonia unisexual but monoecious

Holly unisexual and dioecious

Variable: Cucumber male, perfect, female, parthenocarpic

slide3

Basic Flower Structure

stigma

carpel

Pistil is simple

gynoecium

Flower is perfect

Flower is monoecious

locule

style

pollen

ovary

ovule

anther

superior

filament

stamen

Flower is hypogynous

androecium

petal

corolla

sepal

perianth

receptacle

calyx

Perianth is complete

pedicel

slide4

Ovary Superior

Flower Hypogynous

Ovary Half-Superior

Flower Perigynous

Ovary Half-Inferior

Flower Epigynous

Ovary Inferior

slide5

Flower Structure - review

Ranunculus acris - buttercup

slide6

Basic Flower Structure

stigma

carpel

Pistil is simple

gynoecium

Flower is perfect

Flower is monoecious

locule

style

pollen

ovary

ovule

anther

superior

filament

stamen

Flower is hypogynous

androecium

petal

corolla

sepal

perianth

receptacle

calyx

Perianth is complete

pedicel

This longitudinal section view does not allow us to consider symmetry

slide7

Flower Formula:Symbol Sequence to Diagram Flower

Symmetry: *=radial †=bilateral

*

* 5,

* 5, 5,

* 5, 5, ,

* 5, 5, , 5

Number of Parts per Whorl:

  • sepals in calyx
  • petals in corolla
  • stamens in androecium
  • carpels in gynoecium

Fusion within whorl:

curved line over number

Fusion between whorls:

square bracket below numbers

Attachment of flower parts relative to ovary:

horizontal line

slide8

1

1

Ovary Superior

Flower Hypogynous

Ovary Half-Superior

Flower Perigynous

1

Ovary Half-Inferior

Flower Epigynous

Ovary Inferior