Quiz 3 key - Membrane-bound sacs (alveoli) lying beneath...

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Quiz 3 1. Name the 3 Domains and 1 characteristic for each. Bacteria – single-celled organisms with no membrane-bound organelles. Archaea – single-celled organisms that live in extreme environments Eukarya – single or multi-cellular organisms with membrane-bound organelles. (p. 42) 2. How do photoautotrophic bacteria obtain energy? The make their own energy by fixing CO2 and light energy. 3. What are the 2 types of specialized cells that cyanobacteria colonies contain that other bacteria don’t? Heterocysts and akinetes 4. Name 2 taxa of single-celled Eukaryotes that have flagella. Diplomonadida, Parabasala, Euglenozoa, Alveolata, Stramenopila (see ex. 3) 5. What is a distinctive characteristic of the taxa “Alveolata?”
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Unformatted text preview: Membrane-bound sacs (alveoli) lying beneath the cell membrane 6. 7. What is the dominant stage in the life cycle for: A) Mosses? Gametophye B) Ferns? Sporophyte C) Gymnosperms? Sporophyte D) Angiosperms? Sporophyte 8. What is the name of the structure that contains both fern gametophytes? Prothallus 9. Explain the difference between pollination and fertilization. Pollination occurs when the pollen grain is transferred to the part of the seed plant that contains the ovule. Fertilization occurs when the sperm nucleus that develops within the pollen grain joins with the egg nucleus in the ovule. 10. a) Identify the structure the arrow is pointing to: anther b) What does it produce? pollen...
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This homework help was uploaded on 04/16/2008 for the course BIOL 112 taught by Professor Vaughn during the Spring '08 term at Texas A&M.

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Quiz 3 key - Membrane-bound sacs (alveoli) lying beneath...

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