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What is an ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to decomposers?

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Presentation on theme: "What is an ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to decomposers?"— Presentation transcript:

1 What is an ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to decomposers? a. food web b. an ecosystem c. food chain d. a population

2 Which of the following organisms have the greatest amount of stored energy in the food web? A.Hawk and Coyote B.Grass and Cactus C.Roadrunner and Rabbit D.Grasshopper and Scorpion

3 Which foods are derived from organisms that occupy the level that contains the greatest amount of energy in an energy pyramid? a. bread and tomatoes b. shrimp and rice c. hamburger and French fries d. chicken and lettuce

4 Two of the primary consumers in the food web are A.coyote, rattlesnake, and hawk. B.grass and cactus. C.rabbit and grasshopper. D.rabbit, grasshopper, and scorpion

5 Two of the secondary consumers in the desert environment are A.coyote and rattlesnake B.grass and cactus. C.rabbit and grasshopper. D.hawk and coyote.

6 Identify an organism’s need that is met by an abiotic factor. A.A wolf’s need for warmth; fur coat B.A fish’s need for food; water C.A lizard’s need for warmth; sun D.A rabbit’s need for food; grass

7 Which statement illustrates a biotic factor interacting with an abiotic factor? A.A sea turtle transporting a pilot fish to a source of food. B.A rock moving during an earthquake. C.A plant absorbs sunlight, which is used for photosynthesis. D.Wind cause waves to form on a lake.

8 The ecological resource consumption practices of the average citizen of the United States A. is less than all other parts of the world. B. is balanced by recycling plastic items. C. is greater than most countries in the world. D. contributes to sustainable living practices.

9 A.The hawk population will increase because there will be less competition within their niche in this environment. B.The sparrow and rabbit populations will increase sharply because they will have no predators in this environment. C.The raspberry bush population will increase because there will be less rabbits due to the increased predation by the fox and the hawk. D.The mountain lions will leave the area because there will be less prey available in the ecosystem. If the owl is removed from the food web, what will most likely be the result and why?

10 A.The hawk population will increase because there will be less competition within their niche in this environment. B.The sparrow and rabbit populations will increase sharply because they will have no predators in this environment. C.The raspberry bush population will increase because there will be less rabbits due to the increased predation by the fox and the hawk. D.The mountain lions will leave the area because there will be less prey available in the ecosystem. If the owl is removed from the food web, what will most likely be the result and why?

11 A.The grouse population would increase. B.The grasshopper population would decrease. C.The seed populations would increase. D.The grizzly bear populations would decrease. A drought has caused the producer populations to significantly decrease. Which statement best describes an immediate effect caused by the decrease of producers?

12 A.The grouse population would increase. B.The grasshopper population would decrease. C.The seed populations would increase. D.The grizzly bear populations would decrease. A drought has caused the producer populations to significantly decrease. Which statement best describes an immediate effect caused by the decrease of producers?

13 In a marine ecosystem, disease killed most of the sea otters. This allowed the sea urchins and clams to increase in number. As a result, the sea gull population increased and the seaweed population decreased. Identify a secondary consumer in this marine ecosystem. A.Seaweed B.Clam C.Sea urchin D.Sea gull Sea Gulls Sea UrchinsClams Seaweed Sea Otters.

14 In a marine ecosystem, disease killed most of the sea otters. This allowed the sea urchins and clams to increase in number. As a result, the sea gull population increased and the seaweed population decreased. Identify a secondary consumer in this marine ecosystem. A.Seaweed B.Clam C.Sea urchin D.Sea gull Sea Gulls Sea UrchinsClams Seaweed Sea Otters.

15 34. The producer in the food web shown is: A. grass. B. mouse. C. mountain lion. D. owl.

16 b Which types of organisms must be present in an ecosystem if the ecosystem is to be maintained? a. producers and carnivores b. producers and decomposers c. carnivores and decomposers d. herbivores and carnivores


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