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Definition
| an organelle contianing enzymes that transfer hydrogen (H2) from various substrates to oxygen (O2), producing and then degrading hydrogen peroxide (H2O2) |
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| an alignment of cytoskeletal elements and Golgi-derived vesicles that forms across the midline of a dividing plant cell |
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| a multicellular organ in fungi and plants in which meiosis occurs and haploid cells develop |
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| alteration of generations |
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Definition
| a life cycle in which there is both a multicellular diploid form, the sporophyte, and a multicellular haploid form, the gametophyte; characteristic of plants and some algae. |
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| in organisms (plants and some algae) that have alternation of generations, the mulicellular haploid form that produces haploid gametes by mitosis. The haploid gametes unite and develop into sporophytes. |
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| in organisms (plants and some algae) that have alternation of generations, the multicellular diploid form that results from the union of gametes. the sporophyte produces haploid spores by meiosis that develop into gametophytes. |
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| in the life cycle of a plant of alga undergoing alternation of generations, a haploid cell produced in the sporophyte by meiosis. A multicellular haploid individual, the gametophyte, without fusing with another cell |
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| a plant cell that enhances the transfer of nutrients from parent to embryo |
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| alternate name for land plants that refers to their shared derived trait of multicellular, dependent embryos. |
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| a multicellular organ in fungi and plants in which meiosis occurs and haploid cells develop |
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| a diploid cell, also known as a spore mother cell, that undergoes meiosis and generates haploid spores. |
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| multicellular plant structure in which gametes are formed. female ___ are called archegonia, and male ___ are called antheridia. |
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| in plants, the female gametangium, a moist chamber in which gametes develop |
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| In plants, the male gametangium, a moist chamber in which gametes develop. |
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| embryonic plant tissue in the tips of roots and the buds of shoots. the dividing cells of an ___ enable the plant to grow in length. |
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| a waxy covering on the surface of stems and leaves that acts as an adaptation that prevents the desiccation in terrestrial plants |
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| plant tissue consisting of cells joined into tubes that transport water and nutrients throughout the plant body. |
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| a plant with vascular tissue. ___ include all living plant species except mossers, liverworts, and hornworts |
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| an informal name for a moss, liverwort, or hornwort; a nonvascular plant that lives on land but lacks some of the terrestrial adaptations of vascular plants |
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| an informal name for a member of the phylum ___, which includes club mosses, spike mosses and quillworts. |
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| an informal name for a member of the phylum ___, which includes ferns, horsetails, and whisk ferns and their relatives. |
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| an informal name for a plant that has vascular tissue but lacks seeds. ___ form a paraphyletic group that includes the phyla Locophyta (club mosses and their relatives) and Pterophyta (ferns and their relatives) |
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| a group of organisms that share the same level of organizational complexity or share a key adaptation. |
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| an adaptation of some terrestrial plants consisting of an embryo packed along with a store of food within a protective coat. |
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| a vascular plant that bears naked seeds--seeds not enclosed in specialized chambers. |
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| a flowering plant, which forms seeds inside a protective chamber called an ovary |
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| a mass of green, branched, one-cell-thick filaments produced by germinating moss spores. |
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| the mature gamete-producing structure of a moss gametophyte. |
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| a long, tubular single cell or filament of cells that anchors bryophytes to the ground. unlike roots, ___ are not composed of tissues, lack specialized conducting cells, and do not play a primary role in water and mineral absorption. |
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| the portion of a bryophyte sporophyte that gathers sugars, amino acids, water and minerals from the parent gametophyte via transfer cells |
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| the elongated stalk of a bryophyte sporophyte |
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| the sporangium of a bryophyte (moss, liverwort, or hornwort) |
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Definition
| a ring of interlocking, tooth-like strucutres on the upper part of a moss capsule (sporangium), often specialized for gradual spore discharge |
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| a microscopic pores surrounded by guard cells in the epidermis of leaves and stems that allows gas exchange between the environment and the interior of the plant |
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| extensive deposits of partially decayed organic material formed primarily from the wetland moss Sphagnum |
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| vascular plant tissue consisting mainly of tubular dead cells that conduct most of the water and minerals upward from the roots to the rest of the plant |
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| a long, tapered water-conducting cell found in the xylem of nearly all vascular plants. Functioning ___ are no longer living. |
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| a hard material embedded in teh cellulose matrix of vascular plant cell walls that provides structural support in terrestrial species. |
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| vascular plant tissue consisting of living cells arranged into elongated tubes that transport sugar and other organic nutrients throughout the plant |
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Definition
| an organ in vascular plants that anchors the plant and enables it to absorb water and minerals from the soil |
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| the main photosynthetic organ of vascular plants |
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| In lycophytes, a small leaf with a single unbranched vein. |
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| a leaf with a highly branched vascular system, characteristic of the vast majority of vascular plants. |
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| a modified leaf that bears sporangia and hence is specialized fro reproduction |
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Definition
| a cluster of sporangia on a fern sporophyll. ___ may be arranged in various patterns, such as parallel lines or dots, which are useful in fern identification. |
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| the technical term for a cluster of sporophylls known commonly as a cone, found in most gymnosperms and some seedless vascular plants |
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Definition
| referring to a plant species that has a single kind of spore, which typically develops into a bisexual gametophyte |
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| referring to a plant species that has two kinds of spores: microspores, which develop into male gametophytes and megaspores, which develop into female gametophytes |
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Definition
| a spore from a heterosporous plant species that develops into a female gametophyte. |
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| a spore from a heterosporous plant species that develops into a male gametophyte. |
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| in fungi, a haploid cell, produced either sexually or asexually, that produces a mycelium after germination |
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