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39 Cards in this Set
- Front
- Back
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Vascular tissues |
Xylem and phloem, specialized tissues used for conducting materials within a plant |
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Sepals |
Members of the outermost floral whorl, often green and protect the flower buds |
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Seed |
Reproductive structure composed of an embryo, nutritive materials, and produce a protective coat |
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Pollination |
Transfer of pollen from an anther to the stigma in angiosperms |
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Pollen grain |
Immature male gametophyte in angiosperms and gymnosperms at the stage when it is shed from the plant that produces it |
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Petals |
Floral component consisting of modified leaf like structures which are brightly colored to attract insects or other animals |
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Heterosporous |
Refers to a vascular plant that produces both microspores and megaspores |
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Antipodal cells |
Component of the eight nucleate embryo sac in angiosperms which usually are three in number |
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Archegonium |
Multicellular structure on the gametophyte in which an egg is produced |
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Antheridium |
Male sperm producing structure of a gametophyte found in seedless and some seed plants |
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Micropyle |
Opening in the integument of an ovule through which the pollen tube grows |
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Stigma |
Uppermost pollen receptive portion of a carpel |
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Sporophyte |
Multicellular diploid phase of a plant |
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Microsporocyte |
Diploid cell that will divide by meiosis producing four haploid microspores. Also called a microspore mother cell |
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Ovary |
Lower swollen part of a carpel, contains the ovules and develops into the fruit |
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Homosporous |
Vascular plant the produces only one type of spore |
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Frond |
Leaf of a fern |
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Flower |
Reproductive structure of angiosperms |
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Endosperm |
Usually triploid food supply of an angiosperm seed |
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Primary endosperm nuclei |
Triploid nucleus resulting from the fusion of a single sperm with the two polar nuclei |
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Fruit |
Ripened ovary or group of ovaries, often with other adhering flower plants |
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Megaspore |
Haploid cell that will develop into a female gametophyte in heterosporous plants |
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Megasporocyte |
Diploid cell that will divide by meiosis to produce four megaspores usually only one of which is functional in seed plants. Also called a megaspore mother cell |
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Calyx |
Collective term for all of the sepals of a flower |
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Corolla |
Collective term for all the petals of a flower |
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Polar nuclei |
Usually two of the nuclei in an embryo sac, they fuse with one of the sperm nuclei to form the initial cell of the endosperm in the process of double fertilization |
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Gametangium |
Plant structure in which gametes are formed |
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Microspore |
Haploid cell which will develop into a male gametophyte in heterosporous plants |
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Double fertilization |
Process unique to angiosperms in which one sperm fuses fuses with the egg forming the zygote and the other sperm fuses with the two polar nuclei forming the primary endosperm nucleus |
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Filamen |
Stalk like structure of the stamen that supports the anther |
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Ovule |
Immature seed located in an ovary. Initially it consists of integuments surrounding a megasporangium |
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Carpel |
Female reproductive part of a flower consisting of a stigma, style, and ovary. |
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Anther |
Pollen producing part of a stamen |
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Gametophyte |
Multicellular haploid phase of a plant life cycle from which gametes are produced |
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Spore |
Haploid reproductive cell produced by a sporophyte; it gives rise directly to a gametophyte |
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Sporangium |
Structure on the sporophyte in which spores are produced |
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Cotyledon |
Embryonic seed leaves in embryos and the first leaves of seedlings of gymnosperms and angiosperms, they often contain stored food |
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Stamen |
Pollen bearing organ that occurs in the flowers of angiosperms. Collectively for the androecium |
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Integument |
Outermost covering of an ovule; it will develop into the seed coat |
