Term
| Alternation of Generations |
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Definition
| Alternation between multicellular haploid and diploid plant bodies. |
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Definition
| Multicellular haploid plant body. |
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| Multicellular diploid plant body. |
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| Structure in which spores are produced. |
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Definition
| Spore precursor cell, diploid sporocyte cell that undergoes meiosis to produce spores. |
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Definition
| Haploid cell that divides by mitosis to give rise to the gametopyte (dispersed in bryophytes and seedless vascular plants but contained within sporophyte in seed plants.) |
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| Tough waxy coating on bryophyte and seedless vascular plant spores (and on seed plant pollen.) |
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Definition
| Diploid that results from the fusion of an egg and sperm that divides to form the sporophyte. |
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| Cell division which results in 4 haploid cells from one diploid mother cell. |
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| Cell division that maintains the ploidy of the dividing cell. (Haploid cells produce two haploid cells by mitosis, diploid cells produce two diploid cells by mitosis.) |
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Definition
| Structure that is part of the gametophyte in which gametes (egg and sperm) are produced. |
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Definition
| Gametangium which produces sperm. |
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Definition
| Gametangium in which eggs are produced. |
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Definition
| Haploid cells (egg and sperm) that can fuse to form a zygote. |
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Definition
| The "land plants" or members of the kingdom Plantae are also called embryophytes. |
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Definition
| A non-vascular plant (either liverwort, hornwort, or moss) which has a dominant gametophyte and is restricted to moist habitats. |
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Term
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Definition
| Liverworts (A bryophyte phylum) |
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Definition
| Hornwort (A bryophyte phylum) |
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Term
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Definition
| Mosses (A bryophyte phylum) |
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Definition
| A developing moss gametophyte. |
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Definition
| The gametophyte structure on which the gametangia are borne. |
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Definition
| Root-like structures of a bryophyte gametophyte. Rhizoids function like roots (anchorage, absorption) but are not true roots because they lack a stele, and endodermis, etc. |
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Definition
| The base of a moss sporophyte. |
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Definition
| The stalk of a moss sporophyte. |
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Definition
| A moss sporophyte sporangium. |
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Definition
| A seedless vascular plant (ferns, whisk ferns, club mosses, horsetails, etc.) |
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Definition
| Club mosses and spike mosses (a pteridophyte phylum.) |
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| Ferns, horsetails, and whisk ferns (a pteridophyte phylum.) |
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Definition
| A reproductive structure that contains a sporophyte embryo, a food supply, and a productive coat. Seeds provide protection for the embryo and allow dispersal of the sporophyte embryo to a new location. |
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Term
| What is the number of generations represented in a seed? |
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Definition
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Term
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Definition
| The immature male gametophyte of seed plants. |
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Term
| What are the names and functions of a mature angiosperm male gametophyte. |
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Definition
1. Tube cell: Grows through sporophyte tissue to the micropyle.
2. 2 Sperm cells (derived from a single mitotic cell division of the generative cell. One fuses with the egg to form the zygote, and the other fuses with the polar nuclei to for the endosperm. |
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Definition
| Delivery of the immature male gametophyte (pollen)to the micropyle (in gymnosperms) or the stigma (in angiosperms.) |
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Term
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Definition
| The waxy chemical that protects the spores of bryopytes and pteridophytes, and the pollen of gymnosperms and angiosperms. |
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Definition
| The canal formed by expansion of the tube cell through which the sperm travel to reach the egg. |
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| Approximate number of cells in a mature gymnosperm female gametophyte. |
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Definition
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| Exact number of cells (nuclei) in a mature angiosperm female gametophyte. |
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Definition
| 8 cells. 1 egg, 2 synergid, 1 polar cell (2 nuclei), 3 antipodal cells. |
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Definition
| The region of the sporophyte plant that produces the megaspore precursor cell, which divides by meiosis to form 4 megaspores. Only 1 survives and divides to form the female gametophyte. |
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Definition
| The haploid spore that divides by mitosis to form the female gametophyte. |
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Definition
| Parental sporophyte tissue which surrounds the ovule and becomes the seed coat. |
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Definition
| The region of the sporophyte plant that produces microspore precursor cells, which divide to form 4 microspores. All 4 survive and divide by mitosis to form the immature male gametophyte, the pollen. |
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Term
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Definition
| Haploid spore that divides by mitosis to form the male gametophyte. |
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Definition
| The modified leaf upon which the megasporangia and microsporangia of gymnosperms are borne. |
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Definition
| The sporophyte structure in which megaspores and ultimately, female gametophytes are formed. |
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Term
| What are the parts of an ovule prior to female gametophyte development? |
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Definition
| Integument, megasporangium, megaspores, |
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Term
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Definition
| Openings in the integuments through which sperm can travel. |
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Definition
| The protective structure around a seed. The seed coat is derived from the integuments. |
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Definition
| Reproductive structure of an angiosperm sporophyte that produces both megasporangia and microsporangia (except in the case of imperfect flowers.) |
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Definition
| The part of the flower that attaches to the stemand upon which all of the other flower parts are borne. |
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Definition
| Leaf-like structure (often photosynthetic) that protects the closed flower. |
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Definition
| Leaf-like structure (often colorful and showy) that may serve to attract pollinators. |
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| Floral structures that contain the microsporangia. |
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| The stalk of the stamen which serves to make the mature pollen more accessable to wind or animal pollinators. |
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Definition
| The region of the stamen in which microsporangia are produced. |
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Definition
| Floral structure which contains the megasporangium. |
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Definition
| Parental sporophyte tissuethat surrounds the ovule and provides additional protection for the developing female gametophyte. The ovary gices rise to the fruit. |
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Definition
| Two cells close to the egg that help direct the growth of the pollen tube. |
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Definition
| 3 cells far from the egg of unknown function. |
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Definition
| 2 Nuclei (in one cell) in a central position in the female gametophyte that fuse with the 2nd sperm to form the endosperm. |
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Term
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Definition
| The triploid tissue formed from the fusion of the polar nuclei and the 2nd sperm. Divides by mitosis and provides nourishment for the developing embryo. |
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Definition
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| The sticky tip of the carpel upon which pollen is captured. |
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Definition
| A flower lacking all 4 whorls. |
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Definition
| A flower with all 4 whorls. |
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Definition
| A flower with functional stamens that lacks functional carpels (a male flower.) |
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Definition
| A flower with fuctional carpels that lacks functional stamens (a female flower.) |
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Definition
| A plant with separate male and female flowers on the same plant. |
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Definition
| A plant with separate male and female flowers on separate plants. So, in effect, you have male plants (with only staminate flowers) and female plants (with only carpellate flowers.) |
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Definition
| A flower with both functional stamens and carpels. Most common type. |
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Definition
| Tissue surrounding the seed of an angiosperm which is derived from the ovary. |
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Definition
| Leaves that are preformed in the seed. |
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Definition
| The part of the stem that is above the cotyledons. |
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Definition
| The part of the stem that is below the cotyledons. |
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