Ecology Unit Test

Question 1

What type of population distribution do wolves have? (They hunt in small packs)

Accepted Answer

Clumped

Question 2

N2 gas makes up most of our atmosphere, but we cannot use it. Which organism converts N2 into a usable form for us?

Accepted Answer

bacteria

Question 3

When deforestation occurs in an area, what immediate effect does this have on the water cycle?

Accepted Answer

Less water is returned to the air by transpiration.

Question 4

When one organism benefits and the other is harmed, what kind of relationship is that?

Accepted Answer

parasitism

Question 5

Which organism is crucial for the nitrogen cycle?

Accepted Answer

Bacteria

Question 6

What happens to biodiversity with development and urbanization of land?

Accepted Answer

Decreases

Question 7

The chart below represents four types of symbiotic relationships. Which letter represents commensalism?

Accepted Answer

C

Question 8

Which scenario would result in primary succession?

Accepted Answer

Volcanic eruption

Question 9

What is the most likely effect of recent increases in wild invasive pig populations living in forest ecosystems?

Accepted Answer

decrease populations of native species due to consumption of their food

Question 10

Which environmental factor would cause the greatest decrease in the biodiversity of a pond/lake

Accepted Answer

eutrophication

Question 11

18.What is the function of autotrophs in the carbon cycle?

Accepted Answer

to use carbon dioxide to produce glucose

Question 12

The construction of a new coal-burning power plant would have an impact on the following environmental issues except

Accepted Answer

eutrophication

Question 13

Which statement is an example of how carbon moves through a food chain as part of the carbon cycle

Accepted Answer

Producers take in carbon dioxide, and consumers release it

Question 14

What causes population decrease?

Accepted Answer

Emigration and death rates

Question 15

What type of growth is shown in the graph below

Accepted Answer

exponential

Question 16

How can abiotic factors affect biotic factors?

Accepted Answer

Sunlight affects plant growth

Question 17

Biochemical cycles cycle matter and elements through which components of an ecosystem?

Accepted Answer

abiotic and biotic factors

Question 18

How could releasing a bird to control insect pests negatively impact a farm’s ecosystem?

Accepted Answer

The birds will mate with native birds and create a new specie

Question 19

True or false: Wolves are keystone species.

Accepted Answer

True

Question 20

Which of the following does phosphorous NOT cycle through?

Accepted Answer

the atmosphere

Question 21

What is relationship between the moose and the wolves in Isle Royale National Park?

Accepted Answer

As the wolves increase, the moose decrease

Question 22

Which environmental concern is most associated with burning fossil fuels?

Accepted Answer

global climate change

Question 23

When two species benefit from each other, which relationship describes them?

Accepted Answer

mutualism

Question 24

Often, diseases are caused by parasites. What is the correct definition for a symbiotic relationship that is parasitic?

Accepted Answer

one organism benefits, the other organism is harmed

Question 25

When one organism benefits and the other is unaffected, what typed of relationship is that?

Accepted Answer

commensalism

Question 26

Which does phosphorous NOT cycle through?

Accepted Answer

The atmosphere

Question 27

What is an example of an abiotic factor?

Accepted Answer

Water salinity

Question 28

What type of growth is shown in the figure?

Accepted Answer

Logistic growth

Question 29

How is carbon introduced to a food chain?

Accepted Answer

Producers take in CO2 from atmosphere

Question 30

which organism is an example of a pioneer species?

Accepted Answer

lichen

Question 31

What will most likely happen if the human population continues to grow at current rates?

Accepted Answer

there will be fewer natural resources available for future generations.

Question 32

Which characteristic would be a biotic component of the aquarium ecosystem

Accepted Answer

The ammonia is controlled with a filter that uses two types of bacteria

Question 33

Which process releases water from the stomata of plants?

Accepted Answer

transpiration

Question 34

Which statement BEST describes how energy moves through a food chain

Accepted Answer

producer→primary consumer→ secondary consumer→ tertiary consumer

Question 35

How do plants get nitrogen and phosphorous

Accepted Answer

they absorb it through soil/fertilizer

Question 36

Which statement best describes a researcher studying how disease in lake trout affects their predators in an ecosystem?

Accepted Answer

Studying how population changes affect the community

Question 37

Where does 90% of energy go when it flows through ecosystems?

Accepted Answer

Lost as heat

Question 38

Which energy transfer most likely occurs between organisms in the food web?

Accepted Answer

from rabbit to fox

Question 39

What would be a negative result of deforestation?

Accepted Answer

CO2 levels increase

Question 40

What describes the number of individuals that an ecosystem can support which is represented by the dotted line?

Accepted Answer

carrying capacity

Question 41

Two different populations of birds live in the same area and eat the same types of food. Which relationship is this?

Accepted Answer

competition

Question 42

Which BEST represents a population?

Accepted Answer

Same species in rainforest

Question 43

18. Which of the following sequences represents the levels of organization in ecology from smallest to largest?

Accepted Answer

organism→population→ community→ecosystem→ biosphere

Ecology Unit Test

Questions 43

Ecology Unit Test

Questions 43