BI 211 MIDTERM 2

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mccabkas
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BI 211 MIDTERM 2
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2014-11-03 02:32:48
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BI 211 MIDTERM 2
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  1. What process is used to produce egg and sperm in a Bryophyte gametophyte
    Mitosis
  2. Group Excavata has what modification and what is that modification for
    modification of mitochondria and it is for a different metabolic purpose
  3. Alveolates obtained what new trait
    membrane bund sacs of aveoli
  4. Brown Algae obtained what trait
    Multicellularity
  5. Stramenopiles obtained what trait
    Smooth and hairy flagella, flagella look like noodles so Stramen sounds like Ramen noodles
  6. Golden Algae and its sisters as well as Oomycetes obtained what trait
    Thread like body form.
  7. Red Algae obtained what trait
    Phycobilisomes for photosynthesis in deep water
  8. Red Algae, Chlorophytes, Charophyceans and Land plants all obtained what trait
    Primary endosymbiosis with cyanobacteria
  9. What trait did land plants obtain
    Embryos
  10. What traits did Amoebozoans obtain
    Pseudopodia
  11. What trait did Forams obtain
    Shells made of calcium carbonate
  12. What character distinguishes a eukaryotic cell form a prokaryotic cell
    presence of mitochondria
  13. What characters are considered evidence for the origin of mitochondria and chloroplasts by primary endosymbiosis
    • A) genetic similarity between mitochondria, chloroplasts, and bacteria
    • B) circular structure of DNA in mitochondria and chloroplasts
    • C) binary fission in mitochondria and chloroplasts
    • D) presence of ribosomes in mitochondria and chloroplasts 
    • E) All of the above

    E
  14. The theory of endosymbiosis proposes what kind of evolutionary event
    Horizontal gene transfer
  15. What are the protists
    polyphyletic grouping of mostly single celled eukaryotes
  16. What happens to corals when they lose dinoflagellate symbiotants
    They no longer have a supply of sugars for their energetic need and they become bleached
  17. Whats the similarity between the pelvis of a whale and an apicoplast in an apicomplexan
    They are both examples of vestigial structures
  18. What are the two hosts involved in the life cycle of the apicomplexan, Plasmodium
    • A) Humans and mosquitoes
    • B) Humans and snails
    • C) Humans and crabs
    • D) Humans and tsetse flies
    • E) Humans and sand flies 


    A
  19. In class we discussed the relationship between Paramecium bursaria, a ciliate,
    and Chlorella, a green alga. Why is the interaction between these two protists so
    interesting to biologists?
    • A) They have a classic predator-prey relationship that can be modeled in the lab
    • B) It is possible to observe them initiate secondary endosymbiosis under lab
    • conditions
    • C) It is possible to use this species of Paramecium, with this alga as a symbiont, to
    • produce biodiesel jet fuel

    • D) Chlorella will readily assume the role of a mitochondrion after being engulfed by
    • a Paramecium
    • E) B and D 

    B
  20. What is an advantage to alternating between single cell and multicellular life stages in cellular slime molds
    • A) It optimizes surface area to volume ratio while the amoebas are feeding
    • B) It allows the slime mold to raise itself up off of the substrate in order to improve
    • the dispersal of its spores
    • C) It allows the slime mold to be more efficient as a decomposer
    • D) It allows the slime mold to be better at gas exchange with its environment
    • E) all of the above 
  21. E
  22. Which of the below was an advantage for Charophyte like algae associated with initially leaving the ocean and colonizing land
    Escaping competitors/ predators
  23. If Bryophytes possessed seed and pollen, where would we expect to find the living, where we don't usually find them now
    Very dry environments
  24. In the life cycle of a Bryophyte, which stage is dominant
    Gametophyte
  25. What is true about alternation of multicellular generations in land plants and its associated structures
    • A) Gametophytes are reduced in vascular plants
    • B) Sporophytes are reduced in nonvascular plants
    • C) Sporophytes are more resistant than gametophytes to damage from UV radiation
    • D) Gametophytes and sporophytes are both multicellular life stages
    • E) All of the above are true 
  26. E
  27. Mosses obtained what trait
    Terrestrial living
  28. Ferns and Allies obtained what trait
    Vascular tissue
  29. Gymnosperms developed what trait
    seeds
  30. Angiosperms obtained what trait
    double fertilization
  31. What was the significance of the evolution of vascular tissue in the history of life on earth
    Vascular tissue was the trait that allowed the first forests to form
  32. Where does meiosis occur in the life cycle of a fern
    The sporangium
  33. Why were gymnosperms named gymnosperms
    Their seed lack an ovary
  34. Which is the largest group of gymnosperms
    Coniferophyta
  35. In Angiosperms, two sperm travel down the pollen tube to the embryo sac. What do the two sperm from the pollen grain do once they get there
    One fuses with the egg and the other fuses with two polar nuclei
  36. What is the ploidy of the nutrient reserves in a pine nut
    1N
  37. Which of the below is an ancestral character possessed by cycads
    Flagellated sperm
  38. True or False Female gingko trees produce fruits derived from the ovary
    False
  39. In order to learn more about how the flower evolved in early Angiosperms, what kind of group should we study
    The first lineage of Angiosperms to branch off from the group
  40. Why do plants invest lots of energy into fleshy, sugary fruits
    In order to attract animals and get them to disperse their seeds
  41. How do some orchids deceive their wasp of bee pollinators
    They fool them into attempting to mate with the flower, which gets pollen on their bodies in the process
  42. What is mysterious about some Neotropical fruits
    They do not appear to have dispersers
  43. What are characteristics of a wind-pollinated flower
    colorless and produces lots of pollen
  44. Review structure of flower

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