Chapter 30 Flashcards
A member of the fungal phylum Chytridiomycota, mostly aquatic fungi with flagellated zoospores that represent an early-diverging fungal lineage.
chytrid
One of many connected filaments that collectively make up the mycelium of a fungus.
hypha
A member of one of three clades of early-diverging lineages of extant flowering plants. Examples are Amborella, water lilies, and star anise and its relatives.
basal angiosperms
Traditional classification for a fungus with no known sexual stage.
deuteromycete
The female gametophyte of angiosperms, formed from the growth and division of the megaspore into a multicellular structure that typically has eight haploid nuclei.
embyro sac
A member of the fungal phylum Ascomycota, commonly called sac fungus. The name comes from the saclike structure in which the spores develop.
ascomycete
In seed plants, a structure consisting of the male gametophyte enclosed within a pollen wall.
pollen grain
Association of a fungus with a plant root system in which the fungus causes the invagination of the host (plant) cells’ plasma membranes.
arbuscular mycorrhiza
Layer of sporophyte tissue that contributes to the structure of an ovule of a seed plant.
integument
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.
carpel
A modified leaf in angiosperms that helps enclose and protect a flower bud before it opens.
sepal
A flower in which one or more of the four basic floral organs (sepals, petals, stamens, or carpels) are either absent or nonfunctional.
incomplete flower
A member of a clade consisting of flowering plants that have one embryonic seed leaf, or cotyledon.
monocot
A member of the largest gymnosperm phylum. Most conifers are cone-bearing trees, such as pines and firs.
conifer
In fungi, the fusion of haploid nuclei contributed by the two parents; occurs as one stage of sexual reproduction, preceded by plasmogamy.
karyogamy
A structure that develops within the ovary of a seed plant and contains the female gametophyte.
ovule
A pore in the integuments of an ovule.
micropyle
In angiosperms, a nutrient-rich tissue formed by the union of a sperm with two polar nuclei during double fertilization. The endosperm provides nourishment to the developing embryo in angiosperm seeds.
endosperm
In zygomycete fungi, a sturdy multinucleate structure in which karyogamy and meiosis occur.
zygosporangium