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California State University, Northridge BIO 101 Chapter 26 1)Exponential growth can occur when   

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California State University, Northridge

BIO 101

Chapter 26

1)Exponential growth can occur when    . 

 

2.            If bacteria divide every 30 min, and you start with a single bacterium at noon, how many bacteria will you have just after 2:00 PM?

 

3.            In a deciduous oak forest in the northeastern United States, one example of a nonliving component of the ecosystem is:

 

4.            The growth of a human population can be predicted from           

 

 

5.            If an island had 1000 cats on it, an ecologist would use the word to describe all the members of that species

 

6.            A complex, interrelated network of organisms and the surrounding nonliving environment in a defined area is a(n):

 

7.            Which of the following is an important density-independent factor limiting population size?

 

8.            A pattern of continuously accelerating increase in population size is called

                growth

 

 

9.            Parasites spread more rapidly among     populations

10           Floods and fires are examples of              , which can dramatically and unpredictably reduce populations.

 

 

11           If a caterpillar eats all the seedlings in your garden, killing all of them, the caterpillar is acting as a:

 

 

12           A biologist who investigates how organisms interact with one another and with their nonliving environment is in the field of:

 

 

13.          In a population of lemmings, a sudden freeze that causes many of the lemmings to die would be an example of a:

 

 

14.          If the world birthrate for humans remains high and the death rate declines, there will initially be               the population

 

 

15.          Exponential growth occurs:

 

 

16.          A population of rabbits introduced into an island grew rapidly for a few years and then the growth slowed down. Why did the population become stable?

 

 

17.          Logistic growth leads to of a population.

 

18. A population size will remain stable if:

 

 

19           Match the ecological factor with its type.

 

 

 

20           Which of the following factors would be expected to increase the size of a population? (check all that apply)