Biology

6th -

9thgrade

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Chapter 8 - "Asexual Reproduction & Cell Division: Mitosis"

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  • 1. Multiple Choice
    3 minutes
    1 pt
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    ______________ is the type of reproduction that involves 1 parent, and performs exact DNA replication? During this type of reproduction, there is no fertilization. Also, cells undergo the cell division called mitosis during this type of reproduction.
    asexual reproduciton
    sexual reproduction
    binary fission
    sporulation
  • 2. Multiple Choice
    5 minutes
    1 pt
    As we already know, bacteria reproduce very rapidly under certain environmental conditions. What is the method within which bacteria undergo asexual reproduction?
    Budding - asexual reproduction in which a new organism develops as an outgrowth of the parent. The new organism, called the bud, is a tiny duplicate of the parent organism. In budding, the nucleus divides equally and the cytoplasm divides unequally.
    Regeneration by Fragmentation - type of asexual reproduction where the organism fragments a piece of itself off. In turn, the fragment reproduces an identical creature. Examples are flatworms and starfish 
    Binary Fission - type of asexual reproduction where the parent organism divides equally in half reproducing identical offspring
    Sporulation - cells that contain a nucleus and a small amount of cytoplasm. Spores are surrounded by tough protective coats that enable them to survive unfavorable conditions, such as extreme heat or cold, for long periods of time. When environmental conditions become favorable, each spore can develop and produce by releasing spores.
  • 3. Multiple Choice
    5 minutes
    1 pt
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    During the late 1800's, oyster fishermen were having a problem with starfish eating most of the oyster population. As a result, the fishermen "cut apart" the starfish. Why would this be a "bad" idea?
    Starfish reproduce by budding, within which the starfish grew back and wiped out most of the oyster population.
    Starfish reproduce by binary fission, within which the starfish grew back and wiped out most of the oyster population
    Starfish reproduce by sporulation, within which the starfish grew back and wiped out most of the oyster population
    Starfish reproduce by regeneration by fragmentation, within which the starfish grew back and wiped out most of the oyster population.
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