Go to the Quizzes Page Changing Ecosystems 0% 842 Created by AbuBakrShalabi Please write your name and email to receive your certificate. 1 / 20 Which of the following statements about ecological succession are TRUE? Ecological succession in an ecosystem takes place slowly over time. Ecological succession only occurs in water ecosystems. Ecological succession takes place in both land and water ecosystems. Ecological succession is a process of quick changes in ecosystems. 2 / 20 As you remove resources from an ecosystem, what happens to the population of an organism? It stays the same It increases then decreases It increases It decreases 3 / 20 Kudzu has overgrown many parts of the southern and eastern US and native ground plants have disappeared from the area. This is an example of: Competition occurring between the native and invasive species Commesalism occurring between the kudzo and native plants Parasitism between kudzu and the native plants A predator prey relationship between ground plants and kudzu 4 / 20 Why do the populations of invasive species grow so quickly? They are prey to many animals. Invasive species have no natural predators. They have no food in their new ecosystem. 5 / 20 Pollution can cause harm to the ___________. water land air all of the above 6 / 20 Any species that occurs outside its native range as a result of deliberate or accidental introduction by humans. Native species Non native species Keystone species Invasive species 7 / 20 Which of the following are ways humans can cause the loss of biodiversity within an ecosystem? Pollution Habitat destruction Over-fishing / Over-hunting All of the Above 8 / 20 Why does primary succession take longer to reach climax community? Because climax community is in a forrest. Because primary succession does not have soil Because primary succession already has soil Because trees do not perform photosyntheses. 9 / 20 Which of the following would count as a disruption to an ecosystem? Change in temperature Natural disaster All of the Above Invasive species 10 / 20 An organism that establishes itself outside of its natural range and begins to harm the environment. Extinct species Keystone species Non native species Invasive species 11 / 20 Humans extract resources from nature such as coal, oil, and water.What are some likely problems caused by resource extraction? increased availability to energy resources loss of habitats increasing amounts of pollution improved air and water quality 12 / 20 A climax community is …. the beginning of a new ecological succession. the rocks in a new environment. the fire that will cause destruction. an area that reaches its greatest growing potential. 13 / 20 What type of succession is shown in the image? Aquatic Succession Secondary Succession Primary Succession Community Succession 14 / 20 What does the term dynamic equilibrium mean? An unbalanced ecosystem in which the parts constantly change. An overall balance between the different parts of an ecosystem although the parts constantly change. A changing ecosystem that cannot be balanced because of change. A balanced ecosystem that stays the same without any changes. 15 / 20 The sea lamprey is a risk to native fish because: It eats the alage the fish need. The lamprey causes no risk to native fish. It attaches to the body and sucks the blood from the fish. It is ruining beaches. 16 / 20 What is the difference between primary and secondary succession? soil is present in both primary has no soil and secondary has soil Primary succession already has soil. Primary has soil and secondary does not 17 / 20 The Final stage of ecological succession is... Mature Tree Growth Climax Community Pioneer Community 18 / 20 What type of succession does the image show? Aquatic Succession Secondary Succession Primary Succession Ecosystem Succession 19 / 20 What happens when humans cut down forests to build shopping malls? Habitat is altered, plants and animals destroyed, and pollution increases. The shopping mall reduces the amount of pollution in the area. Plants and animals thrive in the new environment and pollution decreases. New animals species form and plants produce more oxygen. 20 / 20 What is the original cause of eutrophication? Too much oxygen Excess fertilizer Too many predators Too many herbivores Your score is 0% Restart quiz Go to the Quizzes Page