Download Review Interactions Among Living Things Chapter 1, Section 3

Review ­ Interactions Among Living Things Chapter 1, Section 3 Name: __________________________________________________ Period: ____ Answer the following questions: In 1997, a community decided to get rid of the population of rattlesnakes in the area. The graph below shows what happened to the populations of rattlesnakes, birds and rodents. (The rodents included animals such as mice, rats and prairie dogs.) 1.
Did the bird populations appear to benefit from the elimination of the rattlesnakes? How do you know? ______________________________________________________________________ ______________________________________________________________________ 2.
Did the rodent populations appear to benefit from the elimination of the rattlesnakes? How do you know? ______________________________________________________________________ ______________________________________________________________________ 3.
What must have been the main source of food for the rattlesnakes? How can you tell? ______________________________________________________________________ ______________________________________________________________________ 4.
Why do you think the bird populations decreased sharply after the rattlesnakes were eliminated? ______________________________________________________________________ ______________________________________________________________________ 5.
Do you think it was a good idea for the community to eliminate the rattlesnake population Explain your answer. ______________________________________________________________________ ______________________________________________________________________ The graph below shows how the population sizes of lynx and snowshoe hares changed over time. Use the graph to answer Questions 6­8. 6.
When the hare population increased, what happened to the lynx population? Why? _____________________________________________________________________
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How do you think an increase in the lynx population affected the hare population? Why? ______________________________________________________________________ ______________________________________________________________________ 8.
Predict what happened to the two populations between 1935 ­ 1945. What are you basing your prediction on? _____________________________________________________________________
_ ______________________________________________________________________ Vocabulary practice: Fill in the sentences with the correct vocabulary words. Word bank: Mutualism Predator Prey Adaptations Commensalism Parasitism Predation Host Parasite Symbiosis 9.
When a snake eats a mouse, the snake is the ______________________________. The mouse is the ______________________. The type of interaction this is called is _______________________________. 10.
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When two organisms interact and at least one of them benefits from the relationship, it is called __________________________________. When a flea lives on and feeds off the blood of a cat, the flea is the ________________________. The cat is the _____________________________. This type of symbiotic relationship this is called ______________________________. 12.
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Organisms must be able to survive in their ecosystems. In any ecosystem, when animals and plants develop certain characteristics that enable them to survive, those characteristics are called ______________________________________. If a robin builds a nest in a big oak tree, the robin benefits and the tree is not harmed. This type of symbiotic relationship is called ___________________________________. When a bee flies from flower to flower collecting pollen, the bee benefits because it is able to make honey. The flower benefits because the pollen gets carried to other flowers and it allows the plant to reproduce. Both species benefit. This type of symbiotic relationship is called ________________________________________.