AnswersFL-2000310-Biology 1 BUnit Test

Unit Test — Unit test Answers

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The map shows the distribution of wild boars in the United States (shaded area). Which of these facts about wild boars is best supported by the evidence provided?

Question illustration
A
Wild boars were brought to the United States by humans.
B
Wild boars have quickly spread through the United States.
C
Wild boars have established successfully mostly in areas with warm climates.
D
Wild boars have a high reproductive rate and no natural predators.
22
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Review the picture below.Which would be the most accurate title for this picture?

Question illustration
A
primary succession after a controlled fire
B
primary succession after a volcanic eruption
C
secondary succession after a controlled fire
D
secondary succession after a volcanic eruption
23

What best describes the association between the carbon cycle, plants, and animals?

A
Plants fix carbon and release oxygen, and animals release carbon and use oxygen.
B
Animals fix carbon and release oxygen, and plants release carbon and use oxygen.
C
Animals fix carbon through respiration, and plants fix carbon through photosynthesis.
D
Plants decompose fixing carbon, and animals decompose releasing carbon.
24

Which molecule would be the most affected by limited nitrogen?

A
myofibrillar proteins in muscle
B
glucose molecules in starch
C
fat molecules surrounding organs
D
cellulose molecules in plant cell walls
25

An ecosystem has experienced a flood. Which type of plants would you expect to see growing first after the flood?

A
shrubs
B
lichen
C
small annual plants
D
pine and oak trees
26

Review the chart, which shows the population sizes of three African animals in 1990 and in 2000. Population Estimates of Animals in Africa in 1990 and in 2000 19902000Lions100,00047,000Cheetahs25,0007,500Zebras750,000450,000Which explanation is best supported by the numbers in the chart?

A
Lion and cheetah populations compete for the food source of zebras, and lions outcompete cheetahs.
B
The dwindling zebra population has led to the decline of the predator lion and cheetah populations.
C
Overhunting of lion and cheetah populations has led to a decline in the food source population.
D
Lion and cheetah populations compete for the food source of zebras, and cheetahs outcompete lions.
27

Which of the following did not allow researchers to further explore below the ocean’s surface?

A
ROV’s
B
Alvin
C
Palomares
D
Bathysphere
28

What would happen to the size of the carnivore population if the herbivore population increased?

A
decrease
B
increase
C
die off
D
stay the same
29

A hunter illegally kills a wolf in Yellowstone National Park and attempts to bring the wolf's skull back to Florida. Which law is the hunter violating?

A
the National Park System Act
B
the Lacey Act
C
EPA
D
CITES
30

What is the difference between food chains and food webs?

A
Food webs show the flow of energy from producers to consumers, and food chains show the flow of energy from consumers to producers.
B
Food chains show a single path of energy in an ecosystem, and food webs show overlapping pathways of energy in that ecosystem.
C
About ten percent of the energy is passed on to the next trophic level in food webs, but in food chains, about ninety percent is passed on to the next trophic level.
D
Heat is lost when energy is passed on to the next trophic level in food chains, but in food webs, heat is not lost when energy is passed on to the next trophic level.
31

Ash trees are being removed when they show signs of the ash borer, a parasite that affects only ash trees and kills them off. What best explains why the ash trees are being cut down?

A
The ash borer is a density-independent limiting factor, and humans need to clear cut to control tree density.
B
The ash borer is a density-dependent limiting factor and will start to spread to nearby healthy trees.
C
Ash trees are outcompeting other trees and are thus more affected by the ash borer.
D
Changes in climate have decreased ash borer populations which indirectly increased the need for cutting down the trees.
32

White perch is a fish that is native to Atlantic coastal regions and is invasive to the Great Lakes. It feeds on native species and is thought to be the cause of the decline of the Great Lakes walleye fish populations. What was most likely its mode of introduction?

A
produce brought from the eastern states
B
trapped in a ship's ballast or a water tank
C
trapped in a cargo crate carrying nonperishable items
D
luggage brought in an overseas flight
33

Which describes a way in which phosphorus may enter into the phosphorus cycle?

A
Earthquakes release phosphorus.
B
Phosphorus is carried in the rain that was evaporated from lakes.
C
Human use of fertilizers release phosphorus into the groundwater.
D
Phosphorus is transpired from the leaves of plants.
34

Which best describes how an organism’s niche is determined?

A
An organism's habitat and inherited traits determine its niche by influencing how it interacts with the environment and other organisms.
B
An organism’s reproductive rate and population size determine its niche in an ecosystem.
C
An organism's physical size and strength determine its niche by helping it dominate other species.
D
An organism's location and prey determine its nice, regardless of its behaviors or traits.
35

A group of environmentalists was discussing the benefits and drawbacks associated with using fossil fuels. Which argument best fits the conversation?

A
Fossil fuels are cheaper than alternative forms of energy.
B
Fossil fuel reserves will never be depleted.
C
Fossil fuels are easily renewed.
D
Fossil fuel use does not affect the environment.
36

Consider the following data. Rates for Cheetah Population from 2011 to 2012Cause of change20112012Deaths21Births54Immigration 61Emigration83Which would have to happen to keep the population growth of cheetahs in 2013 the same the previous years?

A
4 deaths, 7 births, 2 immigration, 6 emigration
B
3 deaths, 6 births, 5 immigration, 7 emigration
C
5 deaths, 2 births, 8 immigration, 3 emigration
D
1 deaths, 5 births, 3 immigration, 7 emigration
37

What kind of display would be the best way to represent the data below?Type of speciesCritically endangered (%)Endangered or vulnerable (%)Plants1370Invertebrates035Freshwater fish937Amphibians730Reptiles528Birds012Mammals221

A
bar graph
B
pie chart
C
line graph
D
scatter plot
38

Ground squirrels are found in many areas of the United States. They live in underground burrows and are often attacked by birds of prey, coyotes, and bobcats. Which of the following is a limiting factor for a ground squirrel population?

A
a population of tree squirrels
B
a population of hawks
C
genetic variability
D
breeding season
39

Which determines carrying capacity?

A
logistic factors
B
exponential growth
C
population growth
D
limiting factors
40

The marine biome _______.

A
is a large ecosystem, but not larger than some terrestrial ecosystems
B
is characterized by four different zones
C
has little species diversity
D
covers a small portion of the Earth’s surface

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