Ch. 30 Vocab Flashcards
layer of sporophyte tissue that contributed to the structure of an ovule of a seed plant
integument
a structure that develops within the ovary of a seed plant and contains the female gametophyte
ovule
in seed plants, a structure consisting of the male gametophyte enclosed within a pollen wall
pollen grain
the transfer of pollen to the part of a seed plant containing the ovules, a process required for fertilization
pollination
an extinct seedless vascular plant that may be ancestral to seed plants
progymnosperms
member of the largest gymnosperm phylum; most are cone-bearing trees, such as pines and firs
conifers
a modified leaf in angiosperms that helps enclose and protect a flower bud before it opens
sepals
a modified leaf of a flowering plant; often the colorful parts of a flower that attract insects and pollinators
petals
in an angiosperm, the stalk portion of the stamen, the pollen-producing reproductive organ of a flower
filament
the ovule-producing reproductive organ of a flower, consisting of the stigma, style, and ovary
carpels
the sticky part of a flower’s carpel, which traps pollen grains
stigma
the stalk of a flower’s carpel, with the ovary at the base and the stigma at the top
style
in flowers, the portion of a carpel in which the egg-containing ovules develop
ovary
a mature ovary of a flower
fruit
the female gametophyte of angiosperms, formed from the growth and division of the megaspores into a multicellular structure that typically has eight haploid nuclei
embryo sac
in angiosperms, the transfer of pollen from an anther of a flower on one plant to the stigma of a flower on another plant of the same species
cross-pollination
a pore in the integument of an ovule
micropyle
a mechanism of fertilization in angiosperms in which two sperm cells unite with two cells in the female gametophyte to form the zygote and endosperm
double fertilization
a seed leaf of an angiosperm embryo
cotyledons
in angiosperms, a nutrient-rich tissue formed by the Union of a sperm with two polar nuclei during double fertilization; provides nourishment to the developing embryo in angiosperm seeds
endosperm
member of a clade consisting of flowering plants that have one embryonic seed leaf, or cotyledon
monocots
member of a clade consisting of the vast majority of flowering plants that have two embryonic seed leaves, or cotyledons
eudicots
member of a clade of three early-diverging lineages of flowering plants
basal angiosperms
member of the angiosperm clade most closely related to eudicots
magnoliids
an adaptation of some terrestrial plants consisting of an embryo packaged along with a store of food within a protective coat
seed
