Term
| Why do some viruses only interact with certain parts of the body (e.g. rabies targets nerve cells and not those of the mouth and nose?) |
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Definition
| Viral infection requires that proteins of the capsid can bind to specific surface proteins on the host cell. Cells of different tissues have different types of surface proteins. |
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Term
| Which of the following would most completely degrade a viroid? |
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| Drying out; losing water through evaporation. Land organisms have mechanisms and anatomical features that prevent this. |
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Definition
| The kingdom of green plants, includes green algae and land plants. |
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Definition
| a waxy or fatty non-cellular layer (formed of a substance called cutin) on the outer wall of the epidermal cells. |
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Definition
| in plants, a minute opening bordered by guard cells in the epidermis of the leaves and stem; water mainly passes through the stomata. |
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Definition
| in plant xylem, dead cells that taper at the ends and overlap eachother. |
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Definition
| a vascular plant; these plants are distinguished by the presence of tracheids, components of highly evolved transport systems |
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Definition
| having multicellular haploid and diploid stages. |
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Definition
| having only the diploid stage be multicellular. |
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Definition
| a generalized multicellular plant life cycle |
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Definition
| spore producing diploid(2n) phase in a life cycle of a plant having alternate genererations. |
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Definition
| gamete producing haploid(n) phase in a life cycle of a plant having alternate genererations. |
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Definition
| a structure in which spores are produced |
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Term
| spore mother cells (sporocytes) |
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Definition
| a diploid cell that gives rise to haploid spores to produce a multicellular gametophyte. |
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Definition
| these are the first cells of the gametophyte generation. These cells divide by mitosis to produce a haploid multicellular gamete |
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Definition
| a cell or organ in which gametes are produced. |
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Definition
| the diploid product of fertilization that develops into an embryo. |
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Definition
| a member of one of the two evolutionary clades of green algae, these include: volvox, ulva, chlamydomonas. |
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Definition
| a monophyletic group that includes charophycean green algae and land plants |
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Definition
| a member of one of the two evolutionary clades of green algae; considered a sister clade to land plants |
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Definition
| closest living descendants of the first land plants. Nonvascular plants: liverworts, hornworts and mosses |
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Definition
| a member of phylum Hepaticophyta, one of three groups of bryophytes; some of these have flattened gametophytes that resemble the lobes of a liver, the rest look leafy and superficially resemble mosses. |
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Definition
| a member of the phylum Anthocerotophyta; they are small with photosynthetic sporophytes as well as gametophytes. |
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Definition
any member of the phylum bryophyta; they have small, nonvascular leaf-like structures arranged a stemlike axis anchored to a substrate by rhizoids. |
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Definition
| in mosses, specialized structures that anchor the plant and absorb water, but are not tru vascular roots. |
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| multicellular egg-producing organ in bryophytes and some vascular plants. |
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