Biology 3201 Flowering Plants

Perfect flower

Has both female and male parts

Imperfect flower

Has either female or male parts

Angiosperms

Covered seed plants

Stamen

Male reproductive structure

Anther

Contains pollen

Filament

Long slender stalk that holds up the anther

Sepal

A leaflike structure that encloses the bud of a flower

Petal

Colourful leaflike structure of flower

Ovule

Area inside the ovary where the egg and two polar nuclei are found

Ovary (flower)

Reproductive structure of a flower that contains eggs

Pistil

Female reproductive structure of flower

Style

Long slender tube leading from the stigma to the ovary in a flower

Stigma

Sticky portion on top of the style of a flower

Tube nucleus

Nucleus within a pollen grain that forms the pollen tube in a flower

Generative nucleus

Nucleus within a pollen grain that produces two sperm or nuclei

Pollen tube

Hollow tube leading from the stigma to an ovule within the ovary of a flower

Polar nuclei

Two haploid (n) structures within the centre of an ovule

Zygote

A fertilized egg

Seed

Structure formed from the ovule of a flower

Endosperm

Triploid (3n) structure formed when a sperm nucleus fuses with the two polar nuclei within an ovule. Food source for developing embryo

Fruit

Swollen ovary of a plant