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Ecology Review

Total questions: 97

Worksheet time: 1hrs 16mins

Name
Class
Date
1.

Living parts of the environment

a)

Biotic

b)

Abiotic

c)

Carnivore

d)

Herbivore

2.

Which of the following describes soil and temperature in an ecosystem?

a)

abiotic factors

b)

biotic factors

c)

unnecessary factors

d)

selection factors

3.

An ecosystem consists of

a)

a community of organisms.

b)

energy.

c)

the soil, water, and weather.

d)

All of the choices are correct.

4.
A living or once-living organisms in an ecosystem is a
a)
population
b)
biotic factor
c)
abiotic factor
d)
community
5.

Which of the following is NOT a biotic factor?

a)
mushroom
b)
air
c)
elephant
d)
coyote
6.
Is a deer an abiotic or biotic factor? 
a)
abiotic
b)
biotic
7.
Is a fern an abiotic or biotic factor? 
a)
abiotic
b)
biotic
8.
Is a weather an abiotic or biotic factor? 
a)
abiotic
b)
biotic
9.
Is sunlight an abiotic or biotic factor? 
a)
abiotic
b)
biotic
10.
Temperature, light, air, water, and soil are all  _____  parts of the environment
a)
alive
b)
biotic 
c)
abiotic
d)
living
11.
A system made up of organisms interacting with one another
a)
biology
b)
abiotic
c)
biotic
d)
ecosystem
12.
A living or once-living organisms in an ecosystem is a
a)
population
b)
biotic factor
c)
abiotic factor
d)
community
13.

Bio means _________.

a)

non-living

b)

not/without

c)

life

d)

living

14.

The place an organism lives within an ecosystem

a)

ecosystem

b)

community

c)

habitat

d)

niche

15.
An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:
a)

Predator

b)

Autotroph

c)

Producer

d)

Decomposer

16.
The arrows in a food chain or web represents what?
a)

They point to the organism that is being eaten.

b)

It shows how sunlight flows within an ecosystem.

c)

They show what direction the energy is flowing between organisms. 

d)

They represent how water is transferred within a habitat.

17.
Why are plants called producers?
a)
They make carbon dioxide
b)
They decompose
c)
They make their own food
d)
They are omnivores
18.
What is the process in which plants use sunlight to create energy?
a)
Photography
b)
Pennsylvania
c)
Cholorophyll
d)
Photosynthesis
19.
Living things that eat other living things are called...
a)
Consumers
b)
Carnivores
c)
Omnivores
d)
Animals
20.
What do herbivores eat?
a)
Only plants
b)
plants and animals
c)
only other animals
d)
dead organisms
21.
What do carnivores eat?
a)
only plants
b)
plants and animals
c)
only other animals
d)
dead organisms
22.
What do omnivores eat?
a)
only plants
b)
plants and animals
c)
only other animals
d)
dead organisms
23.
Which of the following is NOT an example of a decomposer
a)
fungi
b)
hawk
c)
bacteria
d)
insects
24.
What do all food chains start with?
a)
Consumers
b)
Producers
c)
Omnivores
d)
Herbivores
25.

Which is an example of a producer?

a)
b)
c)
26.
A decomposer?
a)
Eats dead plants or animals and breaks down to put nutrients in the soil
b)
Eats plants or other animals for food
c)
Makes its own food
27.

What is an example of decomposer?

a)
b)
c)
28.
Fungi. Is it a...
a)
Producer
b)
Consumer
c)
Decomposer
29.
Bamboo is a 
a)
producer
b)
consumer 
c)

decomposer

30.

What is ecology?

a)

The study of how extinct organisms survived on earth

b)

The study of how molecules function inside living organisms

c)

The study of how organ systems function together to maintain life

d)

The study of how organisms interact with each other and their environment

31.

An animal that feeds on the remains or wastes of other animals

a)

omnivore

b)

carnivore

c)

scavenger

d)

prey

32.

A habitat is ___________________.

a)

the place or kind of place in which an animal or plant naturally lives.

b)

is how plants produce their own food.

c)

is an animal that only eats meat.

d)

the place where only one animal lives.

33.

A niche ________________.

a)

is the function that an organism performs in the food web of that community.

b)

includes everything else the organism does and needs in its environment.

c)

is specific to each individual animal and plant.

d)

All of the above.

34.

An organism’s habitat provides _____________________.

a)

food, water, shelter, and space.

b)

food, water, and clothes.

c)

only food.

d)

video games, ninjas, and baked beans.

35.

A squirrels niche would be _________________.

a)

hunting prey and providing meat for other squirrels.

b)

searching for fish to eat in the ocean.

c)

staying busy storing nuts and seeds for winter.

d)

help decompose other animals and plants.

36.

A squirrels habitat would be _____________.

a)

Ocean

b)

Arctic

c)

Forest

d)

Dessert

37.

A whale's niche would be which of the following?

a)

eating plankton and krill.

b)

eating sharks and dolphins.

c)

eating hamburgers and fries.

d)

eating other whales.

38.

What is a Niche of a honeybee?

a)

Pollenating Flowers

b)

A Honeycomb

c)

Eating other insects.

d)

Swimming.

39.

What is shown in the image?

a)

Habitat

b)

Niche

40.

What is shown in the image?

a)

Habitat

b)

Niche

41.

A community of organisms and their abiotic environment.

a)

Environment

b)

Biosphere

c)

Ecosystem

d)

Community

42.
A collection of organisms that belong to different populations but all live in the same area and interact with one another.
a)
Population
b)
Ecosystem
c)
Community
d)
Ecosphere
43.
Which of the following is NOT a level of organization in ecosystems?
a)
community
b)
species
c)
population
d)
organism
44.

Coyote, sand, 102 degrees, cactus, and snake.

a)

ecosystem

b)

biomes

c)

niche

d)

community

45.

Which choice shows the correct order of the levels of environmental organization?

a)

organism, population, community, ecosystem, biosphere

b)

organism, population, ecosystem, biosphere, community

c)

organism, community, population, ecosystem, biosphere

d)

population, ecosystem, biosphere, organism, community

46.

An individual is a single _______________ of a particular species. One single zebra is an example.

a)

Population

b)

Organism

c)

Ecosystem

47.

All the individuals of one species in a given area is called a ______________. A herd of zebras would be an example.

a)

Population

b)

Community

c)

Non-living

d)

Organism

48.

The total sum of all the populations of living things within an area that interact with one another is called_________. Zebra, elephants, and giraffes would be an example

a)

Biosphere

b)

Population

c)

Community

d)

Organism

49.
What converts nitrogen into a useable form for plants and animals?
a)
bacteria
b)
fungi
c)
rain
50.

How do living organisms return carbon to the atmosphere in the carbon cycle?

a)

respiration and photosynthesis

b)

decomposition after death and excretion

51.
When a population grows past the ecosystem's carrying capacity, what happens to the population?
a)
Continues to grow
b)
The population starts to die off to return to carrying capcity
c)
The population will go extinct due to lack of resources
d)
The population grows then finds a new carrying capacity
52.
If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?
a)
The bird population would stay the same
b)
The bird population would infinitely increase
c)
The bird population would decrease
53.
Which of the following would INCREASE the carrying capacity of an ecosystem?
a)
increase in predators
b)
disease
c)
increase in available food
d)
drought
54.

Food, water, sunlight, air, soil are resources that are often __________.

a)

limiting factors

b)

wet

c)

carrying capacity

d)

found in rocks

55.
If the population of a certain predator increases, there is often _______ its prey
a)
a decrease the population of
b)
an increase of the population of 
c)
great news for its prey of
d)
no  impact found on
56.

What is an example of a limiting factor

a)

food

b)

water

c)

shelter

d)

all of the above

57.
The largest number of individuals that an area can support is called its _______.
a)
limiting factor
b)
abiotic factor
c)
resource availability
d)
carrying capacity
58.

In a forest ecosystem, which of the following is NOT an example of a limiting factor that would greatly affect a rabbit population?

a)

a rainy season

b)

a disease that causes rabbits to die

c)

grass available to eat

d)

the population of hawks that eat rabbits

59.

The picture to the right represents a sunny, dry desert.

Which factor most likely limits the desert’s carrying

capacity for plant life?

a)

the number of animals that eat plants

b)

the amount of sunlight

c)

the availability of space to grow

d)

the availability of water

60.

The reason that organisms cannot produce populations of unlimited size is that

a)

Populations always stay exactly the same.

b)

The resources of Earth are limited.

c)

There is no carrying capacity for the whole Earth.

d)

Species rarely compete with each other for food.

61.

In which type of symbiotic relationship do both species benefit?

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

62.

In which type of symbiotic relationship does one species benefit while the other species is unaffected?

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

63.

In which type of symbiotic relationship does one species benefit while the other species is harmed?

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

64.

In which type of symbiotic relationship does the predator eat it's prey?

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

65.

A certain species of bird follows cows through a pasture and eats insects that cows stir up. The cows are not affected. Which type of symbiotic relationship is described?

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

66.

A shrimp is warned of danger by a fish and the fish gets a home dug by the shrimp. Which type of symbiotic relationship is this?

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

67.

A bear hunts for a fish down by the river and captures one. Which type of symbiotic relationship is described?

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Predation

68.

True or False: Symbiosis only works with animals.

a)

True

b)

False

69.

Barnacle/Whale: Barnacles create home sites by attaching themselves to whales. As the barnacle is a filter feeder, it also gets access to more water (and more food) due to the relationship. Whale is unaffected.

a)

Commensalistic

b)

Mutualistic

c)

Parasitic

70.

Cuckoo/Warbler: A cuckoo lays its eggs in the nest of the warbler. The cuckoo’s eggs hatch first and the youngkick the warbler eggs out of the nest. The warbler raises the cuckoo babies and the warbler babies aren’t hatched.

a)

Commensalistic

b)

Mutualistic

c)

Parasitic

71.

Ostrich/Gazelle: Ostriches and gazelles feed next to each other. They both watch for predators. Because the visual abilities of the two species are different, they can each identify threats that the other animal may not see as readily.

a)

Commensalistic

b)

Mutualistic

c)

Parasitic

72.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
73.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
74.
What is the role of a producer?
a)
Use sunlight to make food
b)
Gain energy from eating other organisms
c)
Keep other species from overpopulating
d)
Breaking down dead stuff 
75.

What would happen to the bird if the green fish died out?

a)

the bird population would grow

b)

the bird population would die out

c)

the smaller fish will die out

76.

What is the bottom layer of the an energy pyramid?

a)

producer

b)

tertiary consumer

c)

Secondary consumer

d)

primary consumer

77.

What does an energy pyramid show?

a)

Energy flow in a community

b)

Longest lifespans

c)

The stronger animal the higher it is on the pyramid

78.

What would happen if their were no producers?

a)

Every population would grow larger

b)

Everything would die out

c)

The animals would make their own food

79.

What would happen if the primary consumers died out?

a)

the producers would grow and the secondary and tertiary consumers would die

b)

producers would die out

c)

consumers would grow

80.

What process is happening step A?

a)

transpiration

b)

evaporation

c)

condensation

d)

accumulation

81.

The process in which water vapor is released into the atmosphere through plants.

a)

evaporation

b)

transpiration

c)

condensation

d)

precipitation

82.

The process by which molecules of water vapor become liquid water.

a)

transpiration

b)

evaporation

c)

condensation

d)

accumulation

83.

Any form of water that falls from clouds and reaches Earth’s surface because of gravity.

a)

accumulation

b)

precipitation

c)

condensation

d)

surface runoff

84.

In order for condensation to occur, water vapor (gas) must change state into a _________.

a)

solid

b)

liquid

c)

gel

85.

What process is happening step B?

a)

transpiration

b)

precipitation

c)

condensation

86.

What step of the water cycle is happening in arrow D?

a)

Condensation

b)

Evaopration

c)

Run off

87.

What represents the flow of energy in this food chain?

a)

arrows

b)

the sun

c)

producers

d)

consumers

88.

How does carbon in a grass plant get into a lion?

a)

The lion eats an antelope that ate the grass

b)

Carbon from grass doesn't end up in a lion.

c)

The lion absorbs the carbon given off by transpiration

d)

The lion breathes in carbon given out by the plant

89.
Which of the following add carbon dioxide to the atmosphere?
a)
volcanoes
b)
combustion of fossil fuels
c)
animal and plant respiration
d)
all of these
90.
What is happening at 1?
a)
respiration: releasing CO2
b)
decomposing CO2 in the soil
c)
photosynthesis: absorbing CO2
d)
turning CO2 from the atmosphere into organic molecules
91.
How much of the atmosphere is composed of nitrogen gas?
a)
87%
b)
38%
c)
78%
d)
21%
92.
Why do all organisms need nitrogen?
a)
To live and grow 
b)
To build phosphorus
c)
To make oxygen levels grow
d)
To help blood circulate better
93.
How nitrogen is "fixed" into useable form for plants
a)
only through action of bacteria
b)
only through lightning
c)
through action of bacteria & lightning
d)
through photosynthesis
94.
When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.
a)
Water
b)
Atmosphere
c)
Sun
d)
Air
95.
Which one of these does not add CO2 to the atmosphere?
a)
cooking with gas
b)
planting trees
c)
burning wood
d)
riding in a bus
96.

Which describes the relationship between plants and animals in the carbon cycle?

a)

Plants produce and release oxygen that animals need

b)

Plants produce and release carbon dioxide that animals need

c)

Animals produce and release oxygen that plants need

d)

Animals produce oxygen that plants turn into carbon dioxide

97.
How do  animals get nitrogen?
a)
the atmosphere 
b)
eating other organisms
c)
bacteria
d)
lightning 

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