By: Chelsye DeBoor

FLOWERS

Important Parts of a Flower

4 main parts SepalPetal Pistil (or carpel)Stamen

SepalsProtect flower while developing from budLook like green little leavesCollectively called CALYX

Petals

Member of COROLLAAll the petals make the corollaBrightly colored part of a flower

Used to attract pollinators

Female Parts: PISTILSits on the receptacleMade of 4 parts:

StigmaStyleOvaryOvule

Female Parts Continued

Stigma Where pollen grains attach to

StyleLong filament structurePrevents pollen contamination

OvaryProtects ovule; becomes fruit

when fertilizedOvule

Becomes seed when fertilized

Male Parts: STAMEN

3 partsAnthersConnectiveFilament

STAMEN continuedAnthers

Produce pollenContains thousands

of pollen grainsPollen contains

male sex cellsFilament

Holds the anthersFine and hair like

Other Flower PartsReceptacle

The part of the flower that holds everything together

Peduncle (pedicel)Stalk of the flower

Types of Flowers

Imperfect Perfect Complete Incomplete

Perfect Flower

Has both Pistil (Female) and Stamen (Male)

Examples: Lilies, Roses, dandelions, wheat, apple,

tomato

Imperfect flowerHas ONLY one type of reproductive

organsSTAMEN OR PISTILS

Requires 2 flowers (1 male, 1 female) to reproduce

Examples:CornCucurbit family

Melons, gourds, cucurbits (cucumbers)

Male vs. Female Corn

Male vs. Female Cucurbit

Complete FlowerHas all 4 parts

Sepals, petals, pistil, stamenAll complete flowers are perfect, but not all perfect flowers are complete. Why???

Complete Flower

Examples:Roses, zinnia

Incomplete FlowerLacks one or more of the 4 partsExamples: Cucurbitaceae family

Melons, gourds, cucurbits (cucumbers)Calla lily

Monoecious2 options:

Plant has perfect flowers (both sexes)Plant has separate male and female flowers

located on the same plant

Examples:Easter Lily, pea, dandelion, rose

DioeciousHas imperfect flowers on separate

plants One plant is male, one plant is female

Need 2 plants to reproduce

Examples:Cucurbitaceae family

Monocot Embryo growth with single cotyledonFlower parts in multiples of 3Major leaf veins run parallelStem vascular bundles scatteredRoots are adventitiousSecondary growth absentPollen with single pore

Dicot Embryo growth with 2 cotyledonsPollen with 3 poresFlower parts with multiples of 4 or 5Stem vascular bundles in a ringRoots develop from radicleSecondary growth presentMajor leaf veins are netted