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Unit 1 Test Review

Total questions: 70

Worksheet time: 58mins

Name
Class
Date
1.

What is an autotroph?

a)
an organism that gets energy from eating other organisms
b)

an organism that uses sunlight to make its own food

c)
an organism that gets energy from eating dead organisms, non-living material or waste
d)

I have no idea!

2.

An organism that gets energy from eating other organisms is a __________.

a)

autotroph

b)

heterotroph

c)

I don't know! Should I know?

d)
prey
3.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
4.
What percentage of energy is passed on to each tropic level?
a)
10%
b)
50%
c)
90%
d)
100%
5.

The original source of energy for a food web is...

a)

plants

b)

sun

c)

producers

d)

decomposers

6.

In the food web shown, who is the secondary consumer?

a)

grass

b)

mouse

c)

rabbit

d)

fox

7.

What does a primary consumer eat?

a)

tertiary consumers

b)

secondary consumers

c)

producers

d)

decomposers

8.
What is the most important function of pioneer species?
a)
To create rocks
b)
To create soil and add nutrients to the environment 
c)
To look nice
d)
Food for animals 
9.
A species that has a greater impact on the ecosystem than its number would indicate
a)
keystone species
b)
core species
c)
impact species
d)
essential species
10.
What is symbiosis?
a)
Two species that never interact
b)
Two similar species that live close together and interact
c)
Two different species that live close together and interact
d)
Symbols created by two species
11.

Biotic factors in an ecosystem include...

a)

people & animals

b)

water resources

c)

only members of the food chain

d)

plants, animals, and other organisms

12.

What does a decrease in the salmon population due to an increase in river temperature indicate?

a)

an effect of predation

b)

an unchanging biological community

c)

an abiotic factor affecting a biotic factor

d)

change in population but not in abiotic factors

13.

The place where an organism lives is its:

a)

home

b)

territory

c)

habitat

d)

niche

14.

An organism's role in its habitat is its:

a)

job

b)

niche

c)

trophic level

d)

purpose

15.

An ecosystem consists of:

a)

all of the biotic factors in a given area

b)

the types of plants that inhabit a given area

c)

abiotic factors such as the sun, salinity, temperature, and weather found in a specific area

d)

all of the biotic factors and their interactions with the abiotic factors in a given area

16.

Scientists have observed that different species of bats hunt insects at different times of night. Some of these bat species hunt insects high above lakes, and others hunt insects among the trees.

How does hunting at different times of night and at different locations most likely benefit the different bat species?

a)

It prevents the bat species from breeding with each other.

b)

It reduces competition among the bat species for food sources.

c)

It protects the bat species from different types of flying predators.

d)

It decreases the diversity of the insect populations bat species prey on.

17.

Dandelions, common carpet grass, and grass burrs are all present in the same lawn. They all have access to the same soil nutrients and the same amount of water. All are striving to survive and reproduce. This is an example of:

a)

Interspecific competition

b)

Predation

c)

Parasitism

d)

Intraspecific competition

18.

Competition between two or more species for the same resource

a)

Intraspecific

b)

Interspecific

c)

Mutualism

d)

Predation

19.

A relationship in which one species benefits while the other is not affected.

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

20.

An animal that hunts other animals for food

a)

predator

b)

parasite

c)

prey

d)

predation

21.

An organism that is killed and eaten by another organism

a)

commensalism

b)

predation

c)

prey

d)

predator

22.
Why is biodiversity so important?
a)
Because all species depend on each other to survive, so if one becomes extinct another species that relies on it could go extinct as well
b)
Because it’s better to have only one variation of each species.
c)
Because it better to only have a few species on Earth.
d)
Honestly, I have no idea what biodiversity is!
23.

What is species diversity?

a)

The number or variety of species in the world or in a given area

b)

Total genes in a population

c)
The variety of ecosystems that are present in the biosphere.
d)
A species whose numbers are so small that the species is at risk of extinction.
24.

Which community has higher species evenness?

a)

Community A

b)

Community B

c)

Both Communities

25.

Species richness is

a)

a measure of how how close in numbers each species in an environment is

b)

the total number of different species found in an ecosystem

c)

Species with a lot of money!

d)

I have no idea!

26.

True or false: An ecosystem with high genetic diversity is healthier than an ecosystem with low genetic diversity.

a)

True

b)

False

c)

I have no idea!

27.
Two savanna communities both contain 15 plant species. In community A, each of the 15 species is represented by 20 individuals. In community B, 10 of the species are each represented by 12 individuals; the remaining 5 species are each represented by 3 individuals. Which statement best describes the two communities?
a)
Community A has the same biodiversity as community B
b)
Both communities have the same species evenness
c)
Community B has a higher species richness
d)
Community A has higher species evenness
28.

A relationship in which one organism

benefits and the other is harmed

a)

Succession

b)

Commensalism

c)

Mutualism

d)

Parasitism

29.

Development of life in an area AFTER life was disrupted by humans or a natural disaster

a)

Primary succession

b)

Secondary succession

c)

Pioneer species

d)

Biomes

30.

Development of life in an area where NO life was originally present

a)

Primary succession

b)

Secondary succession

c)

Pioneer species

d)

Biomes

31.

Hummingbirds feed on nectar from flowers. The flowers are pollinated by hummingbirds as they move from flower to flower. This is an example of

a)

commensalism

b)

mutualism

c)

parasitism

d)

predation

32.

What prediction is correct about island biogeography?

a)

Smaller islands have more resources, and will have more biodiversity

b)

Larger islands have more space for resources, but will have less biodiversity due to competition

c)

Islands closer to mainland will be more diverse due to more successful migration.

d)

There is more diversity far away from the mainland because some species fly.

33.

The theory of island biogeography suggests that species richness is affected by which of the following factors?


I. island distance from mainland

II. how the island is formed

III. island size

a)

II only

b)

III only

c)

I and III

d)

II and III

34.

Speciation that occurs when populations are physically or geographically separated and there can be no interbreeding or gene flow between the populations

a)

Sympatric speciation

b)

Allopatric Speciation

c)

Population bottleneck

d)

Adaptive radiation

35.
Which biome is characterized by low temperatures and low amounts of rainfall?
a)
tundra
b)
desert
c)
temperate deciduous forest
d)
tropical rain forest
36.
Which biome, because of its climate, has the largest number of species of plants and animals?
a)
tundra
b)
desert
c)
tropical rainforest
d)

chaparral

37.
Which biome contains large populations of grazing herbivores, few species of birds, and deep, rich soil?
a)

Boreal Forest

b)

Tundra

c)

Deciduous Forest

d)

Temperate grassland

38.
Which biome has coniferous trees (which don't lose their leaves)?
a)
Taiga
b)
Temperate Forest
c)
Tundra
d)
Grasslands
39.

Which biome consists of very low precipitation and can be hot or cold? 

a)

savanna

b)

tropical rainforest

c)

tundra

d)

desert

40.

Which biome consists of diverse deciduous trees and has noticeable summers?

a)

Taiga

b)

Temperate forest

c)

Tropical rainforest

d)

Temperate grassland

41.

Ecosystems found on marine shorelines alternating between high and low tide

a)

Abyssal Zones

b)

Coral Reefs

c)

Intertidal Zones

d)

Open Ocean

42.

What are coral reefs often compared to?

a)

forests

b)

gardens

c)

rainforests

d)

deserts

43.

The process that removes carbon from the atmosphere

a)
combustion
b)
cellular respiration
c)
photosynthesis
d)
decomposition
44.
Where is carbon stored in the environment?
a)
Fossil fuels
b)

Trees

c)

Ocean

d)
All of the above
45.

Converts nitrogen to ammonia

a)

Nitrogen-fixing bacteria

b)

Fungi

c)

Rain

d)

Nitrifying bacteria

46.

Fossil fuels are part of the

a)

Carbon Cycle

b)

Oxygen Cycle

c)

Nitrogen Cycle

d)

Phosphorus Cycle

47.

Where do we find the most nitrogen?

a)

ocean

b)

rocks and minerals

c)

atmosphere

d)

bacteria

48.
How do animals get nitrogen?
a)

By breathing 

b)

By eating other organisms

c)

From rainwater

d)

From lightning 

49.

Organisms that do not decompose can be buried and become

a)
water
b)
nutrients
c)
air
d)
fossil fuels
50.
The diagram shows the flow of organic molecules through an ecosystem. What two processes are identified by the labels X and Y?
a)
X : Respiration
Y : Predation
b)
X : Adaptation
Y : Decomposition
c)
X : Fermentation
Y : Nitrogen Fixation
d)
X : Decomposition
Y : Respiration
51.
How do living organisms return carbon to the atmosphere in the carbon cycle?
a)
respiration and photosynthesis
b)
 decomposition and respiration
c)

All answers are correct

d)

I have no idea!

52.

Decomposers make ammonium in the soil during the process of -

a)

nitrification.

b)

nitrogen fixation.

c)

denitrification.

d)

ammonification.

53.

Select all answers below that are stages of the nitrogen cycle.

a)

Nitrogen fixation

b)

Diffusion

c)

Ammonification

d)

Nitrification

54.

Which of these correctly shows the reservoirs where most of Earth's carbon atoms and nitrogen atoms are residing at any given time?

a)
b)
c)
d)
55.

Too much nitrogen and phosphorus in bodies of water (rivers, lakes) can lead to _______.

a)

eutrophication

b)

photosynthesis

c)

limiting nutrients

d)

nitrification

56.

_____ brings nitrogen and phosphorus into water.

a)

Precipitation

b)

Runoff

c)

Transpiration

d)

Condensation

57.

Which nitrogen cycle process is occurring when plant roots absorb ammonium ions and nitrate ions for use in making molecules such as proteins?

a)

nitrogen fixation

b)

nitrification

c)

ammonification

d)

assimilation

58.

The conversion of nitrates back to nitrogen gas is called _____

a)

ammonification

b)

denitrification

c)

nitrogen fixation

d)

decomposition

59.

Burning fossil fuels coupled with deforestation increases the amount of _____ in the atmosphere

a)

phosphorus

b)

carbon dioxide

c)

sulfur dioxide

d)

all of these

60.

Ammonium (NH4+) are converted to nitrate (NO3-) and nitrite (NO2-) through which process?

a)

denitrification

b)

nitrogen fixation

c)

nitrification

d)

ammonification

61.

Which form of nitrogen is MOST usable to MOST plants?

a)

nitrate

b)

nitrogen gas

c)

ammonium

d)

ammonia

62.
The summary at the end of an experiment that explains the results is... 
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
63.

What is an independent variable?

a)

What a scientist changes in an experiment to test their hypothesis

b)

What scientist measure to see if it responded to a change

c)

What happens when you do an experiment

d)

What you keep the same throughout all experimental groups

64.

What is an dependent variable?

a)

What a scientist changes in an experiment to test their hypothesis

b)

What scientist measure to see if it responded to a change

c)

What happens when you do an experiment

d)

What you keep the same throughout all experimental groups

65.

At what temperature did bread mold the slowest?

a)

20

b)

40

c)

60

d)

80

66.
A testable explanation to a problem that has not yet been tested. 
a)
data
b)
theory
c)
hypothesis
d)
fact
67.

What do all the biotic and abiotic factors in a given area make up?

a)

a habitat

b)

a community

c)

an ecosystem

d)

a population

68.

Hummingbirds feed on nectar from flowers. The flowers are pollinated by hummingbirds as they move from flower to flower. This is an example of

a)

commensalism

b)

mutualism

c)

parasitism

d)

predation

69.

If there is 2000 kcal of energy in this particular ecosystem, how many kcal of energy will be available for the hawk?

a)

20 kcal

b)

2 kcal

c)

200 kcal

d)

I have no idea!

70.

Consumers that get their energy by feeding on the remains of other organisms.

a)

consumers

b)

omnivores

c)

carnivores

d)

detritivores

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