FLOWER PARTS (K. PLANTAE)

Unit 2 - Biodiversity

Angiosperms

Have unique reproductive organs called flowers

Flowers contain ovaries, which surround and protect the seeds.

The seed is enclosed Ovary develops into a fruit, which

protects the seed and helps on dispersal.

Contains both male and female parts

Flower Parts

The female part is called the pistil or the carpel.

The male part is called the stamen.

Stamen

The male reproductive structure of a flowering plant.

Consists of two parts anther

Contains pollen

Filament

Parts of the Stamen

Anther the structure

located on top of the stamen and carries the pollen

Parts of the Stamen

Pollen Pollen is the

male sex cell that donates half of the DNA to make a seed.

It is a powdery substance, usually orange or yellow in color, that gets carried by pollinators.

Parts of the Stamen

Filament a thread-like

part that holds up the anther

Pistil/Carpel

the female reproductive structure of a flowering plant

Parts of the Pistil/Carpel

The innermost flower part

Produces female gametes (ovule)

Consists of three parts Stigma Style Ovary

Parts of the Pistil/Carpel

Stigma the sticky

surface on the top of the pistil; it traps and holds the pollen.

Parts of the Pistil/Carpel

Style the tube-like

structure that holds up the stigma

Parts of the Pistil/Carpel

Ovary the plant part at

the bottom of the flower that has ovules inside this turns into the fruit and seeds we eat.

Parts of the Pistil/Carpel

Ovules the female sex

cells inside the ovary that donate half the DNA to become the seed. (They become the

seeds when pollinated or fertilized by the pollen.)

Other Flower Parts

Petal the colorful

flower parts that surround the reproductive structures.

Function is to attract pollinators

Other Flower Parts

Sepal the green petal-

like parts at the base of the flower; they help protect the bud when it develops

Perfect Flowers

Perfect flowers that

have both male and female parts (ex. Roses, lilies, and pea plants)

Imperfect Flowers

Imperfect: flowers with

male or female parts (ex- cucumbers, pumpkins, and melons

Pollinators

A pollinator is something that moves pollen from the male parts to the female parts.