10 #5 *Farmer plows a field and leaves it unattended. *Hurricane destroys aCoastline.*Forest re-grows after aforest fire.These are examples of________ _________.A:Primary successionB:Secondary successionC:BothD:Neither
12 #6 This process is an example of _______ ________. Primary succession Lichens break down the rock with a mild acid.A thin layer of soil is formed.Lichens grow on bare rock.Grasses begin to growon the soil.This process is an example of _______ ________.Primary successionSecondary successionDecaying organic matter forms a thicker layer of soil.A forest is formed.Trees with deeper roots grow in the deeper layer of soil.Small shrubs begin to grow.
14 What is the major difference between primary and secondary succession? #7What is the major difference between primary and secondary succession?Primary begins on bare rock.Secondary begins when soil is already present.Secondary begins on bare rock.Primary begins when soil is already present.A:B:C:BothD:Neither
15 A. Primary begins on bare rock. Secondary begins when soil is already present.
16 #8How would secondary succession affect an area that was destroyed by a hurricane?The area would re-grow starting with lichenThe area would re-grow starting with grasses-trees-forestA:B:C:The area would never re-growD:None of these
17 The area would re-grow starting with grasses-trees-forest B.The area would re-grow starting with grasses-trees-forest
18 An ecosystem that is in balance. #9An ecosystem that is in balance.A:Primary communityB:Succession communityC:Climax communityD:None of these
20 #10How might a cloud of ash from a volcanic eruption that blocks out the sun effect ecosystems?A:Increase temperaturesB:Lower temperaturesC:Slow the rate of plant growthD:B and C
21 Slow the rate of plant growth Lower temperaturesSlow the rate of plant growth
22 *Ecological succession helps to maintain equilibrium in an ecosystem. #11*Ecological succession helps to maintain equilibrium in an ecosystem.How would secondary succession help to restore equilibrium after a flood?A:It increases the number of types of speciesB:It prevents other species from arriving.C:It slows the rate of plant growthD:B and C
26 An adaptation of actions that organisms develop to survive. #13An adaptation of actions that organisms develop to survive.A:Behavioral adaptationB:Structural adaptationC:Climax adaptationD:None of these
30 What might happen if an organism is unable to adapt to its ecosystem? #15What might happen if an organism is unable to adapt to its ecosystem?A:It will survive anywayB:It might become extinctC:BothD:Neither
32 #16 These are examples of _____ _____. A camel’s humpA giraffe’s long neckA monkey’s opposable thumbsBison’s hoovesThese are examples of _____ _____.A. Structural adaptation B. Behavioral adaptation
34 #17 These are examples of _____ _____. Fish swimming in a schoolWildebeest traveling in herdsMonarch butterflies migrating to MexicoSkunks active at nightThese are examples of _____ _____.A. Structural adaptation B. Behavioral adaptation
36 #18You would find the most animal diversity in a meadow with a pond compared to a just a meadow.Why?The meadow and pond have different ecosystems and overlapping ecosystemsThe Meadow and pond have only one ecosystem with fewer overlapping ecosystemsA:B::C:BothD:None of these
37 A.The meadow and pond have different ecosystems and overlapping ecosystems
38 What causes animals to be diverse or different from each other? #19What causes animals to be diverse or different from each other?Adapting to their environment is not importantThey must adapt to their environmentA:B:C:BothD:Neither
39 They must adapt to their environment B.They must adapt to their environment
40 *A nonnative animal is introduced into a mature ecosystem. #20*A nonnative animal is introduced into a mature ecosystem.*The animal will increase in the new community if ____.the nonnative animal has several natural enemiesthe nonnative animal has no natural enemiesA:B:the nonnative animal can learn to behave like the native animalsC:D:Neither
41 the nonnative animal has no natural enemies. B.the nonnative animal has no natural enemies.
42 *What happens to the native plant species in this ecosystem? #21*The weeds in this picture thrive and are able to take over the yard because it has no natural enemies.*What happens to the native plant species in this ecosystem?A:They decreaseB:They increaseC:BothD:Neither
44 Ex: In the left picture, the snakes begin to die from a disease. #22In order for an ecosystem with high biodiversity to recover, what would organisms need to do if one food source became unavailable?Ex: In the left picture, the snakes begin to die from a disease.A:Move to a different ecosystemB:Eat different food sourcesC:They would dieD:None
46 #23Look at the graph.The population of rabbits decreased greatly between points A and B on the graph. Explain why this change occurred.A disease, limited resources, or some other limiting factor caused the rabbit population to decrease to decrease.