Terms : Hide Images
| In an angiosperm, the terminal pollen sac of a stamen, where pollen grains with male gametes form. | ||
| The most primitive lineages of flowering plants, including Amborella, water lilies, and star anise and relatives. | ||
| The female reproductive organ of a flower, consisting of the stigma, style, and ovary. | ||
| The mutual evolutionary influence between two different species interacting with each other and reciprocally influencing each other's adaptations. | ||
| A gymnosperm whose reproductive structure is the cone. Includes pines, firs, redwoods, and other large trees. | ||
| A seed leaf of an angiosperm embryo. Some species have one, others have two. | ||
| 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. | ||
| A term traditionally used to refer to flowering plants that have two embryonic seed leaves, or cotyledons. Recent molecular evidence indicates that these do not form a clade. | ||
| A mechanism of fertilization in angiosperms, in which two sperm cells unite with two cells in the embryo sac to form the zygote and endosperm. | ||
| The female gametophyte of angiosperms, formed from the growth and division of the megaspore into a multicellular structure with eight haploid nuclei. | ||
| A nutrient-rich tissue formed by the union of a sperm cell with two polar nuclei during double fertilization, which provides nourishment to the developing embryo in angiosperm seeds. | ||
| Any of a large subgroup of traditionally dicot angiosperms, including roses, peas, buttercups, sunflowers, oaks, and maples. | ||
| A clade consisting of the vast majority of flowering plants that have two embryonic seed leaves, or cotyledons. | ||
| The stalk of a stamen. | ||
| In an angiosperm, a short stem with up to four sets of modified leaves, bearing structures that function in sexual reproduction. | ||
| A mature ovary of a flower that protects dormant seeds and aids in their dispersal. | ||
| Layer of sporophyte tissue that contributes to the structure of an ovule of a seed plant. | ||
| A flowering plant clade that evolved later than basal angiosperms but before monocots and eudicots. Extant examples are magnolias, laurels, and black pepper plants. | ||
| A pore in the integument(s) of an ovule. | ||
| A clade consisting of flowering plants that have one embryonic seed leaf, or cotyledon. | ||
| (1) In flowers, the portion of a carpel in which the egg-containing ovules develop. | ||
| A structure that develops within the ovary of a seed plant and contains the female gametophyte. | ||
| The thickened wall of a fruit. | ||
| A modified leaf of a flowering plant. | ||
| The structures that contain the male gametophyte of seed plants. | ||
| The transfer of pollen to the part of a seed plant containing the ovules, a process that is a prerequisite for fertilization. | ||
| Extinct seedless vascular plants that may be ancestral to seed plants. | ||
| The base of a flower; the site of attachment of the floral organs to the stem. | ||
| An adaptation for terrestrial plants consisting of an embryo packaged along with a store of food within a resistant coat. | ||
| A modified leaf in angiosperms that helps enclose and protect a flower bud before it opens. | ||
| The pollen-producing male reproductive organ of a flower, consisting of an anther and filament. | ||
| The sticky part of a flower's carpel, which traps pollen grains. | ||
| The stalk of a flower's carpel, with the ovary at the base and the stigma at the top. |
