5 Written Questions

1. linear pathway of energy transfer in an ecosystem
2. animals that eat both plants and animals
3. organism that obtains its energy by feeding on dead organisms or wastes
4. ecological system encompassing a community and all the physical aspects of its habitat
5. process of combining nitrogen gas with hydrogen to form ammonia

5 Matching Questions

1. 22. food web
2. 21. decomposer
3. 24. bio mass
4. 6. biotic factor
5. 11. secondary succession

1. a organism that causes decay
2. b a network of interconnected food chains in an ecosystem
3. c an episode of succession that occurs in areas where there has been previous growth such as abandoned fields or forest clearings
4. d living organisms in a habitat
5. e the dry weight of tissue an other organic matter found in a specific ecosystem

5 Multiple Choice Questions

1. loss of water from a plant through its stomata
   1. 2. habitat
   2. 27. transpiration
   3. 26. ground water
   4. 23. energy pyramid
2. the amount of organic material that the photosynthetic organisms of an ecosystem produced
   1. 13. producer
   2. 10. primary succession
   3. 12. primary productivity
   4. 7. biodiversity
3. a group of organisms that have the same source of energy; a step in a food chain
   1. 15. trophic level
   2. 26. ground water
   3. 13. producer
   4. 19. omnivore
4. place where a particular population of a species lives
   1. 17. herbivore
   2. 2. habitat
   3. 24. bio mass
   4. community
5. physical aspects of a habit
   1. 5. abiotic factor
   2. 7. biodiversity
   3. 2. habitat
   4. 6. biotic factor

5 True/False Questions

1. 13. producer → organism that must obtain energy to build its molecules by consuming other organisms, heterotroph

   True        False

2. 8. pioneer species → small, fast growing plants that are the first organisms to live in anew habitat

   True        False

3. 1. ecology → the study of the interactions of living organisms with one another and with their environment

   True        False

4. 14. consumer → organism that must obtain energy to build its molecules by consuming other organisms, heterotroph

   True        False

5. 18. carnivore → flesh eating organism

   True        False