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5 Written Questions

5 Matching Questions

  1. analogous trait
  2. biomass
  3. respiratory system
  4. Lamarckism
  5. exoskeleton
  1. a The organ system responsible for the intake of oxygen and diffusion of that gas into the blood and the elimination of carbon dioxide from the body. Important structures of the system are the pharynx, larynx, trachea, bronchi, bronchioles, and lungs. Alveoli in the lungs are the location of gas exchange with the blood. The movement of the muscular diaphragm allows the lungs to inhale and exhale.
  2. b A rigid, chitinous protective structure that surrounds the bodies of arthropods and provides support.
  3. c The amount of living matter in a given ecosystem. Because only 10 percent of energy is transferred between trophic levels, the biomass of lower trophic levels is greater than the biomass of subsequent trophic levels: biomass of producers > biomass of primary consumers > biomass of secondary consumers > biomass of tertiary consumers.
  4. d A trait that is morphologically and functionally similar to that of a different species but that arose from a distinct, ancestral condition.
  5. e An evolutionary theory (proved false by Darwin) stating that species change over time by the use and disuse of structures and the inheritance of acquired traits.

5 Multiple Choice Questions

  1. Organisms that consume waste products and dead organic material and constitute part of the food web, which also includes producers and consumers. Also called saprophytes. Decomposers liberate inorganic elements such as nitrogen and carbon and allow those elements to move back into their respective chemical cycles. Examples of decomposers are bacteria and fungi.
  2. Tissue that produces new vascular cells; lies between the xylem and phloem in dicot stems.
  3. Control system of the body that functions by releasing hormones into the bloodstream.
  4. The movement of genes, within a population or between populations, through mating.
  5. A situation in which the concentration of solutes in a solution is lower than what an organism contains. An example is a paramecium in pond water: the organism has more solutes than its environment, so water flows into the cell by osmosis. Paramecia have evolved contractile vacuoles to keep from exploding.

5 True/False Questions

  1. oogenesisThe process in which haploid egg cells (ova) form through meiotic division.


  2. cerebellumPart of the brain. Makes sure that movements are coordinated and balanced.


  3. homologous traitThe process in which haploid egg cells (ova) form through meiotic division.


  4. stabilizing selectionWhen selection pressures favor the average form of a trait.


  5. root hairA situation in which the concentration of solutes in a solution is equivalent to what it contains. There is no concentration gradient in isotonic solutions and no net flow of solutes or water.


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