Ch. 38 Angiosperm Reproduction Flashcards
big ideas: alteration of generations, parts of male/female flowers, double fertilization, parts of a seed, what a fruit is, pollination
what is the function of sepals?
to enclose and protect the bud of a flower
what is the function of petals?
to attract pollinators by size/colour/shape
what are the components of the stamen?
the anther and filament
what is the function of a stamen?
to produce pollen grains, which contain the male sex cells of plants
what are the four components of the carpel?
style, ovary, ovule, stigma
what is the function of the plant ovary?
to house ovules, which will become the fruit of the plant once fertilized
what is the function of the plant ovules?
to house the egg cells and receive pollen from angiosperm pollen grains, will make the seed once fertilized
what is the function of the style?
to serve as the “bridge” between the ovary and stigma
what is the function of the stigma?
to act as a landing platform for sperm, which then travel down the style
what are complete flowers?
flowers with all 4 floral organs = bisexual = may be able to self fertilize (M AND F)
what are incomplete flowers?
flowers that lack a particular reproductive organ. may be unisexual (M OR F)
what is a monoecious plant?
a plant with both types of unisex flowers
what is a dioecious plant?
a plant which only has one sex (all male or female flowers)
what do sporophytes produce?
spores in the form of megasporocytes [female] and microsporocytes [male]
what is a composite flower?
a flower composed of multiple smaller flowers aggregated together [sunflowers/daisies]