Biology 22 2[1]

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Biology 22 2[1]

  1. 1. 22-2 Bryophytes<br />Chapter 22 Plant Diversity <br />
  2. 2. Bryophyte<br />Nonvascular plant; examples are mosses and their relatives.<br />
  3. 3. Rhizoid <br />In fungi, a rootlikehypha that penetrates the surface of an object; in mosses, a long, thin cell that anchors the moss to the ground and absorbs water and mineral from the surrounding soil.<br />
  4. 4. Gemma (singular)<br />Small cup-shaped structure in liverworts that contains many haploid cells; used for asexual reproduction.<br />
  5. 5. Protonema<br />Mass of tangled green filaments in mosses that forms during germination.<br />
  6. 6. Antheridium<br />Male reproductive structure in some algae and plants.<br />
  7. 7. Archegonium<br />Female reproductive structure in some plants, including mosses and liverworts.<br />
  8. 8. Key Concept<br />Bryophytes have life cycles that depend on water for reproduction. Lacking vascular tissue, these plants can draw up water by osmosis only a few centimeters above the ground.<br />
  9. 9. Key Concept<br />Bryophytes include mosses, liverworts, and hornworts.<br />
  10. 10. Key Concept<br />In bryophytes, the gametophyte is the dominant, recognizable stage of the life cycle and is the stage that carries out most of the plant’s photosynthesis.<br />

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