Term
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Definition
| Liverworts, Hornworts, and Mosses |
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Term
| How does Sphagnum modify its environment? |
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Definition
| sphagnum acidifies its environment and decomposes very slowly, and this limits the activity of decomposers. |
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Term
| What is the economic importance of Moss? |
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Definition
| They are commercially important; used for fuel(peat), wound dressings, diapers, and garden soil...moss can absorb >20 times its wieght!! |
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Term
| what is the dominant generation of moss? |
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Definition
| gametophyte dominant(Haploid,n) |
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Term
| is water required for fertilization of mosses? |
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Definition
| yes, because the gametes are not free-living. the antheridia swim across a thin layer of water and enter the archegonium, where fertilization occurs |
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Term
| Why are multicellular gametangia important? |
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Definition
| They are important because they are where the gametes are produced and they provide a protection for the gametes. |
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Term
| why is it important that the embryo is in nutritive tissue of mosses? |
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Definition
| this is important for growth and development because the gametes of mosses are not free-living, also, it protects them from the acidic environment and keeps them from dessicating. |
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Term
| what are the four common names of pteridophytes? |
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Definition
| Lycophytes, ferns, horsetails, and whisk ferns |
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