Lab V - Kingdom Plantae - Seed plants Flashcards
Angiosperm
The traditional name for flowering plants, a very large (300,000+ spp.) and diverse phylum of plants that form flowers for sexual reproduction and produce seeds enclosed in fruits.
o-Includes monocots and dicots.
Gymnosperm
Any of a group of seed plants in which the seeds are not enclosed in an ovary; gymnosperms frequently bear their seeds in cones.
o-Includes four phyla: Conifers, Cycads, Ginkgoes, and Gnetophytes
Megaspore
The (n) spore in heterosporous plants that give rise to a female gametophyte.
Microspore
The (n) spore in heterosporous plants that gives rise to a male gametophyte.
Cones
In botany, a reproductive structure in many gymnosperms that produces either microspores or megaspores.
Microsporangium
The sporangium that produces spores (microspores) that give rise to male gametophytes.
Megasporangium
Found on megasporophylls, the sporangium that produces spores (megaspores) that give rise to female gametophytes.
Ovule
Ovule means “small egg.” In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells.
Flower
A flower is a cluster of leaf-like structures modified for reproduction. An almost infinite variety of sizes and shapes of flowers can be found in angiosperms.
Sepal
On of the outermost parts of a flower, usually leaf-like in appearance, that protects the flower as a bud.
Stamen
The male part of a flower; consists of a filament and anther.
Filament
In flowering plants, the thin stalk of a stamen; the filament bears an anther at its tip.
Anther
The part of the stamen in flowers that produces microspores and, ultimately, pollen grains.
Pistil
The female reproductive organ of a flower; consists of either a single carpel or two or more fused carpels.
o-Carpel- The female reproductive unit of a flower; carpels bear ovules.
Stigma
The portion of the carpel where pollen grains land during pollination (and before fertilization).
