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Transcript
Living Things and the Environment Habitats (p. 705-709) 1. A(n) _________________ obtains food, water, shelter, and other things it needs to live, grow, and reproduce from its environment. 2. The place where an organism lives and that provides the things the organism needs is called its _______________________. 3. What needs of an organism are provided by its habitat?____________________________________ 4. Circle one: True or False? An area contains only one habitat. 5. List four biotic factors in a prairie dog ecosystem. a) _________________ c) __________________ b) _________________ d) __________________ 6. The process in which plants and algae make food using water, sunlight, and carbon dioxide is called _______________________. 7. Define species. ___________________________________________ ___________________________________________ __________________ 8. All the different populations that live together in an area make up a(n) _____________________________________. 9. Put the following levels of organization in an ecosystem in order from the smallest unit of organization to the largest. community ecosystem organism population ___________________________________________ 10. In addition to a community of different species, what else does an ecosystem include? _____________________________________ Studying Populations (p. 711-718) 11. An environmental factor that causes a population to decrease is called a(n) ___________________________________. 12. The largest population that an area can support is called its ______________________. 13. What are some ways weather conditions can limit population growth? ___________________________________________ ___________________________________________ Adapting to the Environment/Competition (p. 723-724) 14. A characteristic that allows a species to live successfully in its environment. ______________________________ 15. The way a species makes its living. ________________________ 16. The process in which a species becomes better suited to its environment. ____________________________________ 17. The three major types of interactions among organisms are competition, _______________________, and symbiosis. 18. Circle True or False: The struggle between organisms to survive in a habitat with limited resources is called natural selection. 19. Circle True or False: In a particular environment, two species can usually occupy the same niche. Predation (p. 725-727) 20. An interaction in which one organism kills and eats another is called ____________________. The organism that does the killing is the ____________________. The organism that is killed is the ____________________. 21. Circle True or False: If a prey population decreases, the population of its predator probably will decrease as well. Symbiosis (p. 728-729) 22. Symbiosis is a close relationship between two ________________ that benefits at least one of the __________________. 23. Complete the compare/contrast table. Types of Symbiotic Relationships Type of Relationship How Species Are Affected Mutualism One species benefits, the other species is unharmed. One species benefits, the other species is harmed. 25.In a parasitic relationship, the organism that benefits is called a(n) __________________, and the organism it lives on or in is called a(n) __________________. Energy Flow in Ecosystems (p. 740-745) 24. Consumers that eat only plants ________________________ 25. Consumers that eat both plants and animals ___________________ 26. Carnivore that feeds on the bodies of dead organisms ______________________________ 27. A series of events where one organism eats another and obtains energy ___________________________________ 28. An organism that makes its own food ________________________ 29. Many overlapping food chains ____________________________ 30. A diagram that shows the amount of energy that moves from one feeding level to another in a food web _______________________ 31. Obtains energy by feeding on other organisms _________________