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 O7 - Ecosystems

1. Which of the following is an example of mutualism?
  A. Hook worms in the intestine of a deer
  B. Orchids growing on tree trunks
  C. Hermit crabs living in the shell of a marine snail
  D. Fungi digesting plant material in the gut of a cow
ANS  
   
2. The term "detrivore" includes
  A. Decomposers
  B. Primary consumers
  C. Secondary consumers
  D. Plants
ANS  
   
3. The amount of carbon dioxide in the atmosphere is
  A. Increasing
  B. Decreasing
  C. Steady
  D. Fluctuating
ANS  
   
4. Which of the following is a secondary consumer?
  A. Carnivore
  B. Herbivore
  C. Plant
  D. Producer
ANS  
   
5. Which of the following pyramids can never be inverted in a natural ecosystem?
  A. Pyramid of numbers
  B. Pyramid of energy
  C. Pyramid of biomass
  D. None of the above
ANS  
   
6. Which of the following organisms is a primary consumer?
  A. A horse parasite
  B. An oak tree parasite
  C. A wolf
  D. Algae
ANS  
   
7. Which trophic level is incorrectly defined?
  A. Carnivores - secondary or tertiary consumer
  B. Herbivores - primary consumer
  C. Omnivores - molds, yeasts and mushrooms
  D. Producers - plants
ANS  
   
8.The hydrologic cycle is driven primarily by
  A. Evapotranspiration
  B. Rainfall
  C. Snowmelt
  D. Percolation of water through the soil
ANS  
   
9. Which one of the following would be a detrivore?
  A. A snake
  B. A mouse
  C. A bacterium
  D. A deer
ANS  
   
10. If the parent material and period of soil formation are similar, we would expect to find the most highly weathered soils
  A. In areas with cold, dry climates
  B. On steep, high-elevation mountain slopes
  C. In hot desert areas subject to intense sun and high winds
  D. In hot, humid, tropical regions
ANS  
   
11. Which of the following are producers?
  A. Termites
  B. Fungi
  C. Algae
  D. Grasshoppers
ANS  
   
12. When we study a(n) ______, we are concerned with the community plus its physical and chemical environment.
  A. Habitat
  B. Niche
  C. Ecosystem
  D. Population
ANS  
   
13. Every ecosystem is characterized by which fundamental phenomena?
  A. Energy flow and chemical cycling
  B. Energy and matter cycling
  C. Water and soil cycling
  D. Evaporation and precipitation cycling
ANS  
   
14. ______ are organisms with the ability to carry on photosynthesis and to make food for themselves.
  A. Herbivores
  B. Carnivores
  C. Producers
  D. Consumers
ANS  
   
15. ______ flows through an ecosystem and does NOT cycle.
  A. Nitrogen
  B. Energy
  C. Carbon
  D. Oxygen
ANS  
   
16. Numerous food chains link to each other in an ecosystem is known as a(n) _________
  A. Food pyramid
  B. Food web
  C. Food cluster
  D. Food group
ANS  
   
17. The biosphere is the part of the _____ that contains living things.
  A. Atmosphere
  B. Lithosphere
  C. Hydrosphere
  D. All of the above
ANS  
   
18. Groundwater located in permeable layers of rock is called a/an ___________
  A. Reservoir
  B. Aquifer
  C. Artesian well
  D. Spring
ANS  
   
19. There is much concern that an increased amount of carbon dioxide in the atmosphere is causing global ______.
  A. Warming
  B. Ozone depletion
  C. CFCs
  D. Greenhouse gases.
ANS  
   
20. The atmosphere contains _____ which is needed for photosynthesis.
  A. Nitrogen
  B. Oxygen
  C. Carbon dioxide
  D. All of the above
ANS  
   
21. Organisms are classified into trophic levels according to _____.
  A. Where they live
  B. The source of their nutrients
  C. How much they weigh
  D. All of the above
ANS  
   
22. Omnivores feed on _____.
  A. Plants
  B. Animals
  C. Both Plants and Animals
  D. Bacteria and Fungi
ANS  
   
23. An example of a detritus feeder is _____ a (an)
  A. Algae
  B. Earthworm
  C. Deer
  D. Iguana
ANS  
   
24. Inorganic nutrients are released from dead organic matter and animal wastes by
  A. Decomposers
  B. Plants
  C. Scarvengers
  D. Herbivores
ANS  
   
25. Solar energy is first transformed by _____ when it enters an ecosystem.
  A. Producers
  B. Primary consumers
  C. Secondary consumers
  D. Detritivores
ANS  
   
Concept by Kishore Lal. Programmed by Kishore Lal... Copyright © 2015 Kishore Lal. All rights reserved.