University:
Texas A&M University
Course:
BIOL 357 | Ecology
Academic year:

2019
Views:

175

Pages:

3
Author:

Arielle Armstrong

Ecological Relationships Quiz Answer Key The following questions are comprised of multiple choice, matching, true-false, or fill in the blank. Please choose the best answer for each question. 1. What is the proper definition for the term population dynamics? a. Organism competition b. The pattern of any process or interrelationship that affects the growth or change in a population c. How loud or quiet a population of organisms are d. A hierarchical order of population levels 2. An organism capable of making organic compounds from inorganic molecules is called a(n) _______. a. Producer b. Consumer c. Predator d. Animal 3. The organism in the question above can also be called a(n) _autotroph_________. 4. What is a consumer? a. An organism that makes its own food b. An organism that obtains food by feeding on other organisms c. A heterotroph d. b and c 5. True or false. All of the following organisms are consumers: beetle, blue whale, horse, chickadee, bacteria, bobcat, tuna, oak tree. false 6. True or false. Decomposers eat living organisms. false 7. Food chains begin with a. An autotroph b. A heterotroph c. A decomposer d. A consumer 8. Which of the animals in the following food chain is the secondary consumer? a. b. c. d. Snake Mushrooms Mouse Grasshopper 9. A food web is made up of a. Only tertiary consumers b. Only autotrophs c. Food chains d. Only one type of organism 10. List the two types of aquatic ecosystems. Marine, freshwater 11. What is the first level of a food web/chain? a. Primary consumer b. Secondary consumer c. Predator d. Autotroph 12. An example of a predator is a. Snake b. Iguana c. Orca whale d. Both a and c 13. The sparrow in the powerpoint is an example of what kind of organism? a. Herbivore b. Carnivore c. Omnivore d. Producer 14. An omnivore eats both _plants_____________ and __animals____________. 15. A bobcat is a _predator_____________ while a snowshoe hare is the bobcat’s __prey_________. 16. As the prey population __increases________, the predator population __increases__________ until there are too many predators, and the prey population __decreases__________. (increases or decreases) 17. A __________ is an organism that grows, feeds, and is sheltered on or in a different organism while contributing nothing to the survival of that organism. a. Host b. Consumer c. Transfer host d. Parasite 18. In a host-parasite relationship, which organism is the beneficiary of the relationship? a. Host b. Parasite 19. A habitat does NOT include which of the following four resources: a. Food b. Light c. Space d. Water 20. What happens as a result of scarcity of resources? a. Drought b. Overabundance c. Extinction d. Competition