UNIT 1
UNIT 2
UNIT 3
UNIT 4
SCIE 3001
Multiple Choice O1 - Living Things
Multiple Choice O2 - Living Things
Multiple Choice O3 - Living Things
Multiple Choice O4 - Living Things
Multiple Choice O5 - Living Things
Multiple Choice O1 - Cycles and Seasons
Multiple Choice O1 - Natural Disasters
Multiple Choice O1 - Soils
Multiple Choice O1. Natural Resources and Conservation
Multiple Choice O7 - Ecosystems
Multiple Choice O8 - Ecosystems
 

Multiple Choice O8 - Ecosystems

1. As nutrients cycle through an ecosystem inorganic nutrients are returned to plants by _____
  A. Producers
  B. Primary consumers
  C. Top predators
  D. Detritivores
ANS  
   
2. Where is energy the highest in this food chain: Seeds ---> Squirrels ---> Snake ----> Hawk
  A. Seeds
  B. Squirrels
  C. Snake
  D. Hawk
ANS  
   
3. The primary consumer is equivalent to the _____ trophic level.
  A. First
  B. Second
  C. Third
  D. Fourth
ANS  
   
4. In a balanced ecosystem you would expect the see the biomass of the _____ to be greater than the biomass of any other groups of organisms. A) producers B) primary consumers C) secondary consumers D) top predators
  A. Carnivore
  B. Herbivore
  C. Omnivore
  D. Producer
ANS  
   
5. Which of the following gases is contributing to a significant increase in atmospheric temperature?
  A. Helium
  B. Oxygen
  C. Methane
  D. Hydrogen
ANS  
   
6. How do greenhouse gases cause the temperature of the earth to increase? They
  A. Allow more solar radiation to pass through to the earth's surface
  B. Prevent heat energy from leaving the earth
  C. Absorb sunlight
  D. Reduce photosynthetic rates
ANS  
   
6. Which of the following statements about ozone is true?
  A. It protects the earth from UV radiation
  B. It increases growth in plants
  C. It causes global warming
  D. It causes cancer
ANS  
   
8.Eutrophication
  A. Is caused by runoff of nitrogen and phosphorous
  B. Causes algal blooms
  C. Results in massive fish kills
  D. All of the above
ANS  
   
9. Exposure to increasing amounts of UV radiation which might ultimately lead to an increase in the incidence of skin cancer is a concern associated with
  A. Acid rain
  B. Ozone depletion
  C. The greenhouse effect
  D. Global warming
ANS  
   
10. Plants can transform the EMR (light) energy in sunlight into chemical energy in organic molecules such as sugars, in a process called
  A. Cellular respiration
  B. Decomposition
  C. Nitrogen fixation
  D. Photosynthesis
ANS  
   
11. Your campus, including the buildings, grounds, students, and all other organisms living there, could be considered a/an
  A. Population
  B. Ecosystem
  C. Biosphere
  D. Community
ANS  
   
12. An ecological "niche" can be defined as
  A. The various habitats an organism may inhabit
  B. The inorganic, nonliving aspects of a given area
  C. The specific environment an organism inhabits
  D. The role an organism plays in its community
ANS  
   
13. A community is
  A. A group of individuals of the same species that occupies the same geographical area and who interact with each other
  B. The populations of all the species that occupy the same geographic area
  C. A hierarchy that includes populations and the physical environment in which they live
  D. Organisms and the physical environment in which they live
ANS  
   
14. Which of the following terms does NOT apply to humans?
  A. Producers
  B. Consumers
  C. Omnivores
  D. Heterotrophs
ANS  
   
15. Which of the following is MOST responsible for increasing atmospheric CO2 levels and upsetting the balance of the carbon cycle?
  A. Action of decomposers
  B. Respiration of plants and animals
  C. Photosynthesis of plants
  D. Combustion of fossil fuels
ANS  
   
16. All of the following are examples of environmental resistance EXCEPT
  A. Disease
  B. Predation
  C. Abundant food supply
  D. Lack of suitable habitat
ANS  
   
17. The biomass of an ecosystem consists of all
  A. Nonliving components of the ecosystem
  B. Living components of the ecosystem
  C. The energy in the ecosystem
  D. Living and nonliving components of the ecosystem
ANS  
   
18. The total mass of nutrient matter that makes up the Earth is
  A. Constant
  B. Decreasing
  C. Iincreasing
  D. Fluctuating
ANS  
   
19. On earth, energy enters ecosystems as
  A. Heat
  B. Glucose
  C. Sunlight
  D. Starches
ANS  
   
20. Desert areas have _____ wetlands.
  A. More biodiversity in the summer than
  B. Lower biodiversity
  C. More biodiversity than
  D. The same biodiversity as
ANS  
   
21. The living space of communities is also called
  A. Forest
  B. Wetland
  C. Desert
  D. Habitat
ANS  
   
22. Which of the following relationships is helpful to one species and harmful to another
  A. Producer
  B. Parasitism
  C. Mutualism
  D. Commensalism
ANS  
   
23. A new species introduced into a system is called a(an)
  A. Native species
  B. Exotic species
  C. Loss of habitat
  D. .Parasite
ANS  
   
24. Which human activity does not destroy habitat? Choose one answer
  A. Agriculture
  B. Settlement
  C. Conservation
  D. Development
ANS  
   
25. Harmful materials released into the environment are called
  A. Global warming
  B. Threatened species.
  C. Invasive species.
  D. Pollution
ANS  
   
Concept by Kishore Lal. Programmed by Kishore Lal... Copyright © 2015 Kishore Lal. All rights reserved.