Quiz about Ch 14 - Ecology

Question 1

Animals such as pandas; mature slowly, have larger body sizes, generally produce fewer offspring, and invest greater parental care to ensure offspring survival. What term is applied to this type of reproductive strategy?

Accepted Answer

K-strategy

Answer

r-strategy

Question 2

Which contribute to a positive population growth?

Accepted Answer

immigration

Accepted Answer

birth rate

Answer

emigration

Answer

death rate

Question 3

What type of factor has a direct impact as the population size increases, such as food and land?

Accepted Answer

density-dependent

Answer

density-independent

Answer

cohort effect

Answer

survivorship factor

Question 4

Which of the following are density dependent factors?

Accepted Answer

competition for resources

Accepted Answer

predation

Accepted Answer

disease

Answer

natural disasters

Question 5

Which of the following are examples of a density independent factors?

Accepted Answer

forest fire

Accepted Answer

seasonal cycles

Accepted Answer

storms

Answer

food supply

Question 6

Factors like predation can have a positive benefit to the population of prey organisms because predators tend to keep prey populations below their ___________.

Accepted Answer

carrying capacity

Answer

sustainibility number

Answer

exponential growth point

Answer

competition level

Question 7

What type of growth model is shown in image A?

Accepted Answer

Logistic

Answer

Exponential

Question 8

What type of growth model is shown in image B?

Accepted Answer

Exponential

Answer

Logistic

Question 9

What point on the graph represents carrying capacity?

Accepted Answer

d

Answer

a

Answer

b

Answer

c

Question 10

Which choice most closely approximates the deer population's carrying capacity based on the graph?

Accepted Answer

80

Answer

100

Answer

60

Answer

10

Question 11

Groups of different species living in the same area at the same time

Accepted Answer

communities

Answer

ecosystems

Answer

biosphere

Answer

populations

Question 12

Population growth is controlled both by factors that are density-dependent and those that are density- independent. Which of the following is an example of a density independent method of population control?

Accepted Answer

A hurricane directly hits a tide pool community on the coast.

Answer

bald eagles feed on salmon in the rivers of Canada and Alaska

Answer

Oak blight is a fungus that spreads from oak tree to oak tree, killing most in its path.

Answer

An enclosed pasture has only one water source that produces 20 gallons per day for all consumers that live in the pasture

Answer

Bighorn sheep often catch a deadly strain of bacterial pneumonia carried by domestic sheep (which are typically immune to it).

Question 13

What is a keystone species?

Accepted Answer

A species that helps to hold an ecosystem together and prevent a trophic cascades.

Answer

A species that lives in or around rocks

Answer

Keys and stones have nothing to do with ecology

Answer

An apex predator, that isn't hunted by anything else.

Question 14

Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales.

Accepted Answer

Commensalism

Answer

Mutualsim

Answer

Parasitism

Question 15

Ostriches and gazelles are two animals that live in Africa. They graze for food near each other because they help each other spot predators. The gazelle has excellent eyesight, but poor hearing, and the ostrich has excellent hearing, but poor eyesight. These two animals will alert one another when danger is near. Which term best describes this relationship?

Accepted Answer

Mutualism

Answer

Predation

Answer

Commensalism

Answer

Parasitism

Question 16

What point on the graph represents rapid growth?

Accepted Answer

b

Answer

a

Answer

c

Answer

d

Question 17

The fish and minnow represent what type of relationship?

Accepted Answer

Predator-Prey

Answer

Interspecific Competition

Answer

Parasitism

Answer

Natural Selection

Question 18

The cattail (vegetation), crayfish, and minnow represent what type of relationship?

Accepted Answer

Interspecific Competition

Answer

Predator-Prey

Answer

Parasitism

Answer

Natural Selection

Question 19

Which statement is correct?

Accepted Answer

The lion and rhino have a predator/prey relationship.

Answer

The grasshopper is the predator and the bird is the prey.

Answer

Giraffes compete with lions and birds.

Answer

None of the above

Question 20

Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?

Accepted Answer

There would be a decrease in the grass/flowers population.

Answer

There would be a decrease in the small bird population.

Answer

There would be a decrease in the mice population.

Answer

There would be an increase in the grass/flowers population.

Question 21

Which of following is an example of top-down regulation in a wetland?

Accepted Answer

The effect of grazing intensity by fish and marine arthropods upon the seaweed species

Answer

A drought that has reduced the size of the wetland.

Answer

An increase in temperature of the water which has increased competition among seaweed species

Answer

Influence of soil nutrients upon the abundance of seaweeds vs. cattails

Question 22

True/False

Long-term disturbances of 10 or more years, for example, years of continued wildfires, will often result in a loss of biodiversity and struggle to recover.

Accepted Answer

True

Answer

False

Question 23

What type of pattern is shown?

Accepted Answer

Uniform

Answer

Clumped / clustered

Answer

Random

Question 24

What would most likely happen if the land and food availability for the deer were increased?

Accepted Answer

The population grow and reach a new carrying capacity.

Answer

The population will go extinct.

Answer

The population will experience zero population growth.

Answer

The growth cycle is erratic and therefore cannot be predicted.

Question 25

True or False: Intentionally or unintentionally, humans always negatively impact ecosystems and are not working to protect or recover ecosystems.

Accepted Answer

False

Answer

True

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