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23 Cards in this Set
- Front
- Back
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What is the Calyx
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The entire collection of sepals on a flower
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What is the perianth
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The combination of the calyx and corolla on a flower
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What is the sporophyte generation
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The diploid generation that produces spores
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What is the gametophyte generation
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The haploid generation that produces gametes
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What is a Carpel/Pistil
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Vase-like structure in the center of the flower. Consists of an ovary, stigma, and style.
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What is a style
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The stalk portion of the carpel/pistil
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What is a stigma
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The swelled top of the carpel/pistil
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What is monoecious
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Plants with flowers that are only male or female but both are found on the same plant
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What is dioecious
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Plants with flowers that are either all male or all female for a single plant.
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What is androecium
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A plant's entire male reproductive unit.
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What is gynoecium
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A plant's entire female reproductive unit.
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What is the nucellus
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Inside the ovule, directly surrounds the megasporocyte. Functions as a megasporangium. May develop into the perisperm to feed the embryo.
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What is the exine
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The pollen coat derived from the tapetum. Composed of sporopollenin and has a pore opening.
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What is the endosperm
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Developed by fusion of a sperm cell with the two polar nuclei. Usually becomes a food source for the embryo.
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What are the nucelllus and the megagametophyte
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Parts of the ovule that develop into the seed following fertilization.
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What is an ovary
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The swollen base of a carpel/pistil. Contains ovules and will develop into a fruit following fertilization.
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What is the superior/hypogynous ovary position
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An ovary position where the sepals, petals, and stamen are below the ovary
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What is the inferior/epigynous ovary position
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An ovary position where the sepals, petals, and stamen are above the ovary
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What is the funiculus
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The connection between an ovule and the placenta in the ovary
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Sporogenesis in Gynoecium
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megaspore mother cell undergoes meiosis to produce 4 megaspores. 3 cells degenerate, one survives and undergoes 3 mitotic divisions. Produces a mature female gametophyte/megagametophyte with 7 cells/8 nuclei
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Sporogenesis in Androecium
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Microspore mother cell undergoes meiosis to produce 4 microspores. Microspores are together initially as a tetrad. Split apart and undergo mitosis into a mature pollen grain containing a generative cell and a tube cell.
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What is the pericarp
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Composed of three layers formed from the ovary wall during fruit development.
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What are the exocarp, mesocarp, and endocarp
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The three layers of pericarp formed from the ovary wall during fruit development.
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