Flower Parts and Functions

female gametophytes

Embryos sacs that are inside of the ovules.

male gametophytes

Pollen grains. Dispersed by wind or a pollinator

sepal

a modified leaf in angiosperms that helps enclose and protect a flower bud before it opens.

ovule

a structure that develops within the ovary of a seed plant and contains the female gametophyte

stamen

holds all male reproductive organs, the pollen-producing reproductive organ of a flower, consisting of an anther and a filament.

receptacle

holds seeds, the base of a flower; the part of the stem that is the site of attachment of the floral organs.

pollen grain

in seed plants, a structure consisting of the male gametophyte enclosed within a pollen wall.

anther

produces pollen, The terminal pollen sac of a stamen, inside which pollen grains with male gametes form in the flower of an angiosperm.

filament

supports anther, In an angiosperm, the stalk portion of the stamen, the pollen-producing reproductive organ of a flower.

pollen tube

A tube formed after germination of the pollen grain that functions in the delivery of sperm to the ovule.

carpels

The ovule-producing reproductive organ of a flower, consisting of the stigma, style, and ovary.

ovary

The portion of a carpel in which the egg - containing ovules develop.

style

The stalk of a flowers carpel, with the ovary at the base and the stigma at the top.

stigma

The sticky part of a flowers carpel, which receives pollen grains.

petal

a modified leave off a flowering plant. are the often colorful parts of a flower that attract insects and other pollinators.

pistil

a single carpel or a group of fused carpels.

peduncle

flower stalk; expands into the receptacle.

pollen

the sperm, the fine spores that contain male gametes and that are borne by an anther in a flowering plant