Unit Test — Unit test Answers

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16

The burrowing owl is found in dry, open areas such as grasslands, prairies, savannas, deserts, farmlands, golf courses, and urban areas throughout most of western United States and Florida, Central America, and most of South America. It makes its home in burrows of other animals and primarily eats insects and small rodents. As humans build more cities, nearby burrowing owl habitats change due to destruction of burrows and loss of prey. Which is the least likely outcome of the habitat changes that are described?

A
The niche of the burrowing owl may change as it adapts to the changes.
B
The niche of the burrowing owl may change as it moves to a new habitat.
C
The population of the burrowing owl may be reduced or even become extinct.
D
The population of the burrowing owl may increase in its new surroundings.
17

Which of the following adaptations is typical of marine mammals?

A
thick layer of blubber
B
body covered in thick fur
C
webbed hands and feet
D
breathing apparatus on the sides of the head
18

Interactions between organisms and their environment impact the organism’s overall population. The jaguar Panthera onca is the largest cat in North America. It is found in areas across the Southwest, including Arizona, New Mexico, and Texas. It is a carnivore that has powerful jaws and sharp teeth and preys on fish, turtles, and many smaller mammals. Which shows the relationship between the jaguar and turtles?

A
adaptation principle
B
competitive exclusion principle
C
niche principle
D
predator-prey relationship
19

A trout population grew from 4 in 1992 to 16 in 1993 and then to 64 in 1994. If it continued to grow exponentially, approximately how many trout were there in 1995?

A
100
B
128
C
256
D
320
20

Which best describes what is occurring in this population of squirrels?Number of Squirrels Entering and Leaving a Population after 1 YearCause of changeNumber of squirrelsDied from predation2Born4Immigration10Left to find food3Died from disease8Left to find a mate3

A
Population growth is decreasing.
B
Population growth is increasing.
C
Population growth stays the same.
D
Population reaches carrying capacity.

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