In the name of ALLAH, the most beneficient, the most merciful

Limnology (ZOO401)

Multiple Choice Questions (MCQs)

Objective Questions

  1. The Copepoda of Crustacean have ________ sub order?

    1. 1
    2. 2
    3. 3
    4. 4
  2. Blue Green Algae have a role in forming of the early earth's atmosphere because they can fix ________ and carbon dioxide?

    1. Hydrogen
    2. Methane
    3. Nitrogen
    4. Phosphorous
  3. Cyanobacteria contain differentiated cells as ________ which are major sites of nitrogen fixation?

    1. Chlorophyll
    2. Mitochondria
    3. Heterocysts
    4. Carotenoids
  4. The ________ marshes are characterized by periodic or permanent shallow water, little or no peat (decaying matter) deposition, and mineral soils. They typically derive most of their water from surface waters, including floodwater and runoff, but do receive ground water inputs?

    1. Fresh water
    2. Wet meadows
    3. Wet prairies
    4. Praitie potholes
  5. Copepod of Crustacean eggs hatch into small free living larvae termed ________?

    1. Medusa
    2. Nauplii
    3. Caterpillar
    4. Sessile
  6. The ________ contains earth's largest store of carbon?

    1. Air
    2. Oceans
    3. River
    4. Land
  7. The sparkling white sand beaches of the Caribbean and many other areas in the world are eroded ________ remains of green algae.

    1. Calcium-Carbonate
    2. Calcium-Phosphate
    3. Calcium-Stearate
    4. Calcium-Aluminate
  8. The ________ develop when snowmelt and rain fill the pockmarks left on the landscape by glaciers. Ground water input is also important?

    1. Fresh water
    2. Wet meadows
    3. Wet prairies
    4. Praitie potholes
  9. Terrestrial producers remove CO2 from the atmosphere and aquatic producers remove it from the ________?

    1. Air
    2. Land
    3. Plants
    4. Water
  10. The ________ is the basic building block of the carbohydrates, fats, proteins, DNA, and other organic compounds necessary for life?

    1. Nitrogen
    2. Hydrogen
    3. Carbon
    4. Sulfate
  11. The suborder Cladocera of Crustacean includes mainly micro zooplankton. Usually Cladocerans range in size from ________ mm?

    1. 10 to 20
    2. 1 to 10
    3. 0.5 to 6
    4. 0.2 to 3.0
  12. There are ________ major groups of ciliate genera?

    1. One
    2. Two
    3. Three
    4. Four
  13. The ________ commonly occur in poorly drained areas such as shallow lake basins, low-lying depressions, and the land between shallow marshes and upland areas. Precipitation serves as their primary water supply, so they are often dry in the summer?

    1. Fresh water
    2. Wet meadows
    3. Wet prairies
    4. Prairie patholes
  14. Lakes and ponds go through a natural aging process called ________. Marshes, swamps, and bogs are generally the mature stages of succession for lakes and ponds?

    1. Aging
    2. Earth quake
    3. Succession
    4. Marshes
  15. Tidal freshwater marshes are located ________ of estuaries. Tides influence water levels but the water is fresh. The lack of salt stress allows a greater diversity of plants to thrive?

    1. Downstream
    2. Level
    3. Downfall
    4. Upstream
  16. ________ swamps are found in broad floodplains of the northeast, southeast, and south-central United States and receive floodwater from nearby rivers and streams.

    1. Forested
    2. Focal
    3. Gruvial
    4. Seminal
  17. In basic physical structure, algae fall into ________ basic physical structures?

    1. One
    2. Two
    3. Three
    4. Four