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Plant Structures#2


sporophyte The stage in the life cycle of a plant in which the plant produces spores.
gametophyte The stage in the life cycle of a plant in which the plant produces gametes, or sex cells.
annual A flowering plant that completes its life cycle in one growing season.
biennial A flowering plant that completes its life cycle in two years.
perennial A flowering plant that lives for more than two years.
fertilization The process in sexual reproduction in which an egg cell and a sperm cell join to form a new cell.
zygote A fertilized egg, produced by the joining of a sperm cell and an egg cell.
cone The reproductive structure of a gymnosperm.
ovule A plant structure in seed plants that produce the female gametophyte; contains an egg cell.
fruit The ripened ovary and other structures of an angiosperm that enclose one or more seeds.
stigma The sticky tip of the pistil.
pistil The female reproductive parts of a flower. Contains the stigma, style, and ovary.
sepal A leaf-like structure that encloses and protects the bud of a flower.
anther The sticky part of the stamen that makes pollen.
filament The structure that holds up the anther. (A part of the male reproductive system.)
petal A colorful, leaf-like structure of some flowers.
ovary A flower structure that encloses and protects ovules and seeds as they develop.
stamen The male reproductive part of a flower. (Contains the anther and the filament.)
style The structure that connects the stigma to the ovary.
tropism The response of a plant toward or away from a stimulus.
hormone A chemical that affects growth and development.
auxin A plant hormone that speeds up the rate at which a plant's cells grow and controls a plant's response to light.
photoperiodism A plant's response to seasonal changes in the length of night and day.
dormancy A period of time when an organism's growth or activity stops.
Created by: IsabellaDay