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Definition
| A plant hormone. It reduces growth and sensitivity to antheridiogen in C-Fern gametophytes. |
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| One of the alternative forms of a gene that occurs at the same locus. |
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| Alternation of generations |
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Definition
| Life cycle alternating between gametophytes and sporophyte. |
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| In ferns, a chemical substance (pheremone) that produces sperm (spermatozoids); the sperm-producing sex organ of seedless plants as well as some fungi and algae. |
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| A male sexual organ that produces sperm. The sperm producing sex organ of seedless plants as well as some fungi and algae. |
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| The nipple-shapped external portion of an archegonium below the base of which the egg is located. |
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| The female sexual organ that contains a single egg. The egg producing sex organ of seedless plants, such as ferns, mosses. |
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| A chemical that can attract motile cells such as sperm. |
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Definition
| The green pigment in plant cells used for photosynthesis. |
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Definition
| The chlorophyll containing organelle in plants and algae. |
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| The specialized pattern of leaf development that occurs in ferns, in which the leaf unrolls from the fiddlehead. |
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| A type of plant produced by artificial means through cultivation, not existing naturally. |
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| In genetics, a character state (or allele that controls it) that is expressed in hte phenotype even if another allele for the locus is present. |
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Definition
| The developing diploid sporophyte resulting from division of the zygote. |
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| The growth response to the absense of light in which certain cells become elongated. In higher plants chlorophyll synthesis is also terminated. |
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Definition
| A seedless and flowerless plant that has two life-cycle stages- A vascular sporophyte with roots, stems and fronds (leaves), which produces spores by meiosis and an independant, non vascular, microscopic gametophyte stage that produces male and female gametes. |
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Definition
| The union of nuclei from female and male gametes. |
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Definition
| A unit of heredity carried on the chromosome. |
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Definition
| The genetic allelic makeup of an individual. |
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Definition
| The begining of growth or development of a spore or seed. |
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Definition
| Having one set of chromosomes. |
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Definition
| A gametophye containing a meristem and both antheridia and archegonia. |
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Definition
| An organism with both male and female reproductive organs. |
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Definition
| Producing two types of spores as a result of meiotic division. |
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| A combination of two different types. |
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Definition
| Absorption of fluid by physical means. |
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Definition
| In plants a situation in which a particular genetic combination is not viable. |
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Definition
| The major photosynthetic organ of vascular plants. |
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Definition
| The location of a gene on a chromosome. |
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Definition
| A gametophyte lacking a meristem and containing numerous antheridia. |
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Definition
| A process of cell division in sexually reproducing organisms that results in reduction of the chromosome number (by 1/2) in the products. |
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Definition
| An area of active cell division that gives rise to other cells and tissues |
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Definition
| An inorganic substance necessary for normal growth. |
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Definition
| A row of cells present in the neck of an unopened archegonium. |
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Definition
A substance produced by one individual of a species the affects the development of other individuals.
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Definition
| The food containing tissue of a vascular plant. |
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Definition
| A biochemical process in green plants by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source and releasing oxygen as a by-product. |
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| Any number of organic molecules that absorb and reflect light of particular wavelengths. |
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Definition
| Having more than double the basic chromosome number. |
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| A structure produced from a developing spore that bears sex organs, sometimes used interchangeably with Gametophyte. |
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| A term commonly referring to ferns and fern allies such as horsetails and clubmosses. |
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Definition
| Data expressed as a description of an inherent or distinguishing characteristic. |
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Definition
| In genetics a character state (or allele that it controls) that is expressed in the phenotype only if another identical allele for the locus is present. A recessive allele can be masked by a dominant allele. |
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| A clear, thread like-cell visable in germinating spores and at the base of gametophyes. |
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Definition
| The vascular organ of sporophytes that is typically associated with the substrate. |
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| The very tip portion of a root that is composed of a loose aggregation of friable cells. |
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| In statistics, a subset which is analyzed to be representative of the whole population. |
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| IN genetics, the separation during meiosis of a pair of alleles at a given locus, resulting in gametes containing only a single allele per locus. |
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| The arial portion of a plant distinct from the root. |
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| Single celled haploid (1n) product of meiosis that germinates and develops into a gametophyte. |
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Definition
| A diploid (2n) cell that undergoes meiosis to produce haploid (1n) spores. |
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Definition
| (2n). The macroscopic diploid vascular stage of the fern life cycle that produces spores. |
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| A group of plants distinguished by a particular trait. |
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Definition
| The fusion of two gametes. |
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Definition
| A preparation of tissues or cells placed in water on a slide and covered with a coverslip to allowing viewing under the microscope. |
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| The water-conducting tissue of a vascular plant. |
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Definition
| The diplod cell produced by fusion of gametes. |
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