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| an adaptation of some terrestrial plants consisting of an embryo packaged along with a sotre of food within a protective coat |
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| a structure that develops within the ovary of a seed plant and contains the female gametophyte |
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| in seed plants, a structure consisting of the male gametophyte enclosed within a pollen wall |
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| the transfer of pollen to the part of seed plant containing the ovules, a process required for fertilization |
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| an extinct seedless vascular plant that may be ancestral to seed plants |
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| member of the largest gymnosperm phylum. most ___ are cone-bearing trees, such as pines and firs |
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| in an angiosperm, a short stem with up to four sets of modified leaves, bearing structures that function in sexual reproduction. |
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| a modified leaf in angiosperms that helps enclose and protect a flower bud before it opens |
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| a modified leaf of a flowering plant. ___ are the often colorful parts of a flower that advertise it to insects and other pollinators. |
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| the pollen-producing reproductive organ of a flower, consisting of an anther and a filament. |
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| In an angiosperm, the stalk portion of the stamen, the pollen-producing reproductive organ of a flower |
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| in an angiosperm, the terminal pollen sac of a stamen, where pollen grains containing sperm-producing male gametophytes form. |
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| the ovule-producing reproductive organ of a flower, consisting of the stigma, style and ovary. |
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| the sticky part of a flower's carpel, which traps pollen grains. |
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| the stalk of a flower's carpel, with the ovary at the base and the stigma at the top. |
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| In flowers, the portion of a carpel in which the egg-containing ovules develop. In animals, the structure that produces female gametes and reproductive hormones. |
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| a mature ovary of a flower. the fruit protects dormant seeds and often aids in their dispersal. |
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| the female gametophyte of angiosperms, formed from the growth and division of the megaspore into a multicellular structure that typically has eight haploid nuclei |
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| 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. |
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| a pore in the integument(s) of an ovule |
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| a mechanism of fertilization in angiosperms in which two sperm cells unite with two cells in the female gametophyte (embryo sac) to form the zygote and endosperm |
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| a seed leaf of an angiosperm embryo. Some species have one ___, and others have two. |
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| In angiosperms, a nutrient-rich tissue formed by the union of a sperm with two polar nuclei during double fertilization. the ___ provides nourishment to the developing embryo in angiosperm seeds. |
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| member of a clade consisting of flowering plants that have one embryonic seed leaf, or cotyledon |
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| a term traditionally used to refer to flowering plants that have two embryonic seed leaves, or cotyledons. Recent molecular evidence indicatest aht ___ do not form a clade; species once classified as ___ are now grouped into eudicots, magnoliids, and several lineages of basal angiosperms |
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| member of a clade consisting of the vast majority of flowering plants that have two embryonic seed leaves, or cotyledons. |
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| member of a clade of three early-diverging lineages of flowering plants. Examples are Amborella, water lilies, and star anise and its relatives |
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| member of the angiosperm clade most closely related to eudicots. Extant examples are magnolias, laurels, and black pepper plants |
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