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Ecology I Study Guide Name: Vocabulary List. To study vocabulary first see if you can say the definition to yourself outloud for each word. If you know the word then cross it off the list. The words you did not know you can study further by creating flash cards with dummy definitions or quizzing with a parent or partner Abiotic, Biotic, Autotroph, Heterotroph, Camouflage, Commensalism, Competition, Ecosystem, Endangered Species, Energy Pyramids, Food web, Food Chain, Herbivore, Carnivore, Omnivore, Mimicry, Mutualism, Parasitism, Predation, Producer, Consumer, Symbiosis Completion Complete each statement. Use the terms from the following list to complete the sentences below. community biosphere, Predator, Coevolution, Prey, Ecology Symbiosis, commensalism 1. Populations of organisms that live in and interact in a particular area form a(n) ____________________. 2. The study of interactions between living things and their environment is ____________________. 3. A spider that feeds on live insects is an example of a(n) ____________________. 4. The part of Earth where life exists is the ____________________. 5. When the close interaction between two organisms results in long-term changes in both organisms, ____________________ has taken place. Use the terms from the following list to complete the sentences below. food chain food web producers omnivores 6. A food web shows energy connections better than a(n) ____________________. 7. Animals that eat plants or animals are ____________________. 8. Living things that make their own food from sunlight are ____________________. 9. A diagram showing food energy going from one living thing to another is a(n) ____________________. Use the terms from the following list to complete the sentences below. population biotic abiotic community 10. A river carrying nutrients is a(n) ____________________ factor that helps the ecosystem. 11. Plants, animals, and all living things are ____________________ factors. 12. Two or more individuals of the same kind living together are a(n) ____________________. 13. All the populations of living things in the same place are a(n) ____________________. Short Answer 14. What is the difference between a population and an ecosystem? Give an example of each. 15. Explain the difference between a food chain and a food web. 16. Certain ants take a sweet liquid called honeydew from tiny insects called aphids. In exchange for the honeydew, the ants protect the aphids from predators. What kind of relationship is this? Explain your answer. 17. A caterpillar, a deer and a rabbit all want to drink from the same puddle, eat the same plant, and bask in the same spot of sunshine. Are they competing members of a population? Why or why not? 18. Think about the wolf and deer activity we did. How do the predator and prey populations affect each other? What causes predator populations to go up? What causes prey populatioins to also go up or down? 19. How does the energy in a fish get into the fish? How does the energy stored in the fish get released from the fish? 20. Explain the difference between mutualism and coevolution. 21. Can a predator ever be the prey for another species? 22. Arrange the following words, and draw arrows to show how energy might flow between these organisms: grass, seeds, rabbits, birds, mice, foxes, bacteria. 23. Which of the following terms apply to you? predator, limiting factor, producer, individual organism, biosphere, consumer, abiotic 24. How does biodiversity increase the health of an ecosystem? 25. Describe how energy flows from the sun to a tiger. 26. Why are producers important to an ecosystem? 27. Why are decomposers important to an ecosystem? 28 What do plants use carbon and oxygen for? 29. What do plants and animals use nitrogen for? 30. What two chemicals are used by plants to make sugar? What chemical do animals use to burn sugar?