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Ecosystems and Food Webs

Total questions: 100

Worksheet time: 2hrs 55mins

Name
Class
Date
1.
All energy on Earth ultimately comes from what source?
a)
Water
b)
Sun
c)
Consumers
d)
Oxygen
2.
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.
3.
An organism that uses sunlight to create its own food is known as a:
a)
Producer
b)
Heterotroph
c)
Consumer
d)
Decomposer
4.
Why might an organism have more than one arrow coming from them in a food web?
a)
More than one organism may eat them. 
b)
They may eat more than one other organism. 
c)
This organism gets its energy from multiple sources. 
d)
They have no resources available to them.
5.
This organism recycles nutrients back into the soil when it breaks down dead stuff
a)
producers
b)
consumers
c)
decomposers
6.
Earthworms help break down plant and animal remains and return the nutrients back into the soil. What are earthworms?
a)
consumers
b)
decomposers
c)
producers
d)
predators
7.
Which organism is the producer?
a)
small fish
b)
penguin
c)
algae/seaweed
d)
killer whale
8.
An organism that lives by breaking apart dead organic matter into simpler parts is...
a)
scavenger
b)
consumer
c)
decomposer
d)
carnivore
9.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
10.
A group of organisms of the same species living in the same area are called a/an ________.
a)
community
b)
habitat
c)
population
d)
ecosystem
11.
All of the living and nonliving things in an area that interact with each other are called a/an ______.
a)
community
b)
habitat
c)
population
d)
ecosystem
12.
How do bacteria, or decomposers, help the ecosystem?
a)
Give of Carbon Dioxide
b)
Breaks down dead animals 
c)
Give off Oxygen
d)
It doesn't help them, it kills them
13.
How do animals help keep plants alive in an ecosystem?
a)
Eats them
b)
Gives off Oxygen
c)
Nothing
d)
Gives off Carbon Dioxide
14.
Plants are producers, what do they produce that animals need to survive?
a)
Food 
b)
Oxygen
c)
Both Food and Oxygen
d)
Neither
15.
When one type of organism eats another; ________ is passed from one level to another.
a)
Food
b)
Water
c)
Energy
16.
A __________ is an ordered arrangement of animals and plants in which each feeds on the one below it.
a)
Food Web
b)
Food Chain
c)
Ecosystem
d)
Consumer
17.
A ________________ is the complex network of food chains.
a)
Food Network
b)
Ecosystem
c)
Producer
d)
Food Web
18.
What are the different levels of a food web?
a)
Producers, Herbivore, Carnivore, Decomposer
b)
Producers, Omnivore, Carnivore, Decomposer
c)
Herbivore, Omnivore, Carnivore
d)
Decomposer, Producer, Herbivore, Carnivore, Omnivore
19.
A habitat is home to a tangle of food chains called ___
a)
a nutrient hub
b)
an energy chain
c)
a food web
d)
the carbon cycle
20.
The interaction of living and non-living things in a habitat is called ___
a)
an environment
b)
an ecosystem
c)
a food web
d)
a food chain
21.
The things in an ecosystem are all ___
a)
separate
b)
connected
c)
scattered
d)
unrelated
22.
What is an ecosystem?
a)
the pattern of weather that affects an area
b)
the life cycle of a plant
c)
all the living things in a forest or desert
d)
all the living and nonliving things that share an environment
23.
What are plants and animals that get their energy from eating other living things?
a)
producers
b)
consumers
c)
herbivores
d)
decomposers
24.
What part of a food chain only eats meat?
a)
omnivores
b)
producers
c)
herbivore
d)
carnivore
25.
How do living things get energy?
a)
by eating
b)
by sleeping
c)
by drinking water
d)
by moving around
26.
Elephants only eat plants.  What kind of consumer is an elephant?
a)
producer
b)
omnivore
c)
herbivore
d)
carnivore
27.
Which of the following is a way that humans could change/destroy an ecosystem?
a)
Mowing the grass
b)
Building a shopping center
c)
enjoying a picnic
d)
watching tv
28.
Which of the following is a natural disaster that could wipe out an ecosystem?
a)
a sunny day
b)
forest fire
c)
rain
d)
thunder storm
29.
Which of the following to omnivores eat?
a)
plants only
b)
meat only
c)
both plants and animals
d)
they make their own food
30.
What is a food web?
a)
a web created by a spider to trap its food
b)
a network of food chains in an ecosystem
c)
a community of plants and animals
d)
the food that one animal eats
31.

Some beetles break down the remains of dead animals. Some mushrooms break down the remains of dead trees. How do these actions most benefit plants?

a)

By returning nutrients to the soil

b)

By releasing oxygen into the air

c)

By making space for new animals

d)

By decreasing the population of herbivores

32.

Some facts about a bird called the painted redstart are listed in the box above. Which fact best describes one way this bird changes its environment to meet its needs?

a)

Fact 1

b)

Fact 2

c)

Fact 3

d)

Fact 4

33.

Some facts about birds called Cattle Egrets are listed below. Which of these facts best describes how these birds depends on other animals to survive?

a)

Fact 1

b)

Fact 2

c)

Fact 3

d)

Fact 4

34.

The table lists ways that four organisms obtain energy. Which organism obtains energy without depending on another organism?

a)

Oak tree

b)

Mushroom

c)

Cottontail Rabbit

d)

Mountain Lion

35.

A student observes the following activities while walking in a park. Which of these living organisms was interacting with another living organism in the environment?

a)

Fire ant

b)

Blue jay

c)

Bee

d)

Hawk

36.
When living things battle each other for resources, it is called
a)
producing
b)
recycling
c)
cooperation
d)
competition
37.
An ecosystem is made up of all the ___________ and _____________ factors in an area. 
a)
not/without
b)
Limiting Factor/ Carrying Capacity
c)
Living/ Nonliving
d)
life/ biotic factor
38.
Two or more food chains that share links make a 
a)
community
b)
fossil
c)
food web
39.
The owl receives energy from which organisms?
a)
grasshopper and mouse
b)
mouse and rabbit
c)
rabbit and butterfly
d)
butterfly and frog
40.
Which organism is the top predator in this food web?
a)
leopard seal
b)
killer whale
c)
elephant seal
d)
crabeater seal
41.
How many predators does the squid have?
a)
1
b)
2
c)
3
d)
4
42.
Name the producers in this food web.
a)
seagull and fish
b)
penguin and crab
c)
phytoplankton and seaweed
d)
seaweed and zooplankton
43.
What type of consumer is the shrew?
a)
herbivore
b)
omnivore
c)
carnivore
44.
What type of consumer is the impala?
a)
herbivore
b)
omnivore
c)
carnivore
45.
Which one is NOT an example of a decomposer?
a)
mushroom
b)
leaves
c)
mold
d)
worm
46.

Many animals in an ecosystem depend on other animals for

a)

air

b)

energy

c)

shelter

d)

water

47.

Which best describes why many kinds of plants and animals can live together in an ecosystem?

a)

The plants and animals all care for each other and protect one another.

b)

The plants and animals are all part of a food chain and depend on each other to live.

c)

The plants and animals are independent of one another, so they can live together.

48.

Which would most likely increase the number of squirrels living in an area?

a)

cutting down trees that serve as habitats for squirrels

b)

planting trees that produce nuts squirrels do not eat

c)

reducing the number of animals that hunt and kill squirrels

49.

Which food chain is shown correctly?

a)

A

b)

B

c)

C

50.

Jake goes fishing and notices a sign saying that he must release all the fish back into the water after he catches them. Which explains how this would most likely benefit the ecosystem?

a)

It helps to maintain a balanced food chain.

b)

It supplies more food for aquatic life living in the lake.

c)

It keeps fish available for when Alex goes fishing.

51.

Which will most likely happen to the grasshopper population if the grass population decreases?

a)

The grasshopper population will increase because there will be less competition.

b)

The grasshopper population will decrease because there will be less food available.

c)

People will come in and make chocolate covered grasshoppers.

52.

Which best explains how organisms in an overpopulated community interact with each other?

a)

They compete with each other for food and survival.

b)

They occupy different habitats to avoid overcrowding.

c)

They work together to gather food for their community.

53.

Which best explains how a pond ecosystem is similar to a rainforest ecosystem?

a)

Both ecosystems contain large amounts of water.

b)

Both ecosystems are found in most parts of the world.

c)

Both ecosystems support food webs made up of producers and consumers.

54.

Bailey noticed that Koala bears eat very little other than eucalyptus leaves. Which would most likely happen if this food source was destroyed?

a)

Koalas may become extinct.

b)

Koalas may become carnivores.

c)

Koalas may remain in the area.

55.

A simple food chain includes hawks, lizards, and insects. Which will most likely happen to the lizard and hawk populations if a pesticide is sprayed to kill the insects, and the lizard and hawk populations cannot find other food in this ecosystem?

a)

Both the lizard population and the hawk population will increase.

b)

Both the lizard population and the hawk population will decrease.

c)

Both the lizard population and the hawk population will just go eat at Waffle House.

56.

What would most likely happen to the food chain in the picture if Lucas decides to dust his wheat crop with an insecticide?

a)

The wheat would become greener.

b)

Other birds would move into the fields.

c)

There would be fewer sparrows in the fields.

57.

In a food chain, foxes are consumers of rabbits and mice. If the mice population suddenly decreases, what will most likely happen to the number of foxes?

a)

The number of foxes will increase because they will eat fewer rabbits.

b)

The number of foxes will decrease because they will be eaten by the rabbits.

c)

The number of foxes will decrease because they will only have one remaining food source.

58.

Aphids are tiny insects that feed on the leaves of garden plants. Ladybugs eat aphids. If ladybugs eat all the aphids in a garden, which will most likely increase over time?

a)

the number of ladybugs

b)

the amount of sooty mold

c)

the number of garden plants

59.

The removal of which organism would result in the most damage to the ecosystem?

a)

fox

b)

rabbit

c)

grasshopper

d)

grass

60.
Biotic factors in a biome
a)
sand
b)
water
c)
kinds of birds
d)
air
61.
Abiotic factor in a marine biome
a)
seaweed
b)
water depth
c)
coral
d)
dolphin
62.
Most of the nutrients in a tropical rain forest are found in plants so, 
a)
the rain forest soil is very rich.
b)
there are few animals in the rain forest.
c)
the rainforest soil is poor in nutrients
d)
there are few plants in the rainforest.
63.
Has permafrost; in the Arctic or Antarctic
a)
alpine tundra
b)
savanna
c)
desert
d)
polar tundra
64.
Has clumps of trees and seasonal rains
a)
temperate deciduous forest
b)
coniferous forest
c)
savanna
d)
temperate grassland
65.
Has grass, but few trees due to fires, drought, and grazing
a)
temperate grassland
b)
coniferous forest
c)
desert
d)
savanna
66.
Has many trees that do not change much seasonally
a)
desert
b)
coniferous forest
c)
temperate deciduous forest
d)
savanna
67.
Has many trees that lose all their leaves to save water
a)
coniferous forest
b)
tundra
c)
temperate grassland
d)
temperate deciduous forest
68.
Has organisms with special adaptations to a hot, dry climate
a)
desert
b)
savanna
c)
tundra
d)
taiga
69.
Is a wetland that has trees and is often found in low-lying areas
a)
coral reef
b)
swamp
c)
marsh
d)
estuary
70.
Has a constantly changing amount of salt in the water
a)
estuary
b)
coral reef
c)
intertidal zone
d)
polar ice
71.
A large ecosystem is called a ______
a)
Ecosystem
b)
Habitat
c)
Biome
d)
Niche
72.
Which biome is the driest?
a)
Desert
b)
Tundra
c)
Taiga
d)
Rainforest
73.
Which Biome has permafrost?
a)
Temperate Forest
b)
Rainforest
c)
Taiga
d)
Tundra
74.
Which biome has deciduous trees (which lose their leaves)?
a)
Temperate Forest
b)
Rainforest
c)
Grasslands
d)
Taiga
75.
Which biome has coniferous trees (which don't lose their leaves)?
a)
Taiga
b)
Temperate Forest
c)
Tundra
d)
Grasslands
76.
Which biome has wide-open fields of grass?
a)
Taiga
b)
Grasslands
c)
Temperate Forest
d)
Rainforest
77.
Which biome has the most variety of plants and animals?
a)
Temperate Forest
b)
Rainforest
c)
Tundra
d)
Grasslands
78.
Which biome has 4 seasons?
a)
Taiga
b)
Tundra
c)
Grasslands
d)
Temperate Forest
79.
In which 2 biomes can only plants/animals with adaptations survive?
a)
Taiga/Temperate Forest
b)
Grasslands/Desert
c)
Tundra/Desert
d)
Rainforest/Tundra
80.
Which biome is home to lions, zebras, wildebeests, giraffes, and elephants?
a)
Grasslands
b)
Tundra
c)
Rainforest
d)
Temperate Forest
81.
Which biome is home to cacti, scorpions, coyotes, kangaroo rats, and lizards?
a)
Desert
b)
Grasslands
c)
Temperate Forest
d)
Taiga
82.
Which biome produces over 50% of the world's oxygen?
a)
Rainforest
b)
Temperate Forest
c)
Grasslands
d)
Taiga
83.
Which biome is Canada in?
a)
Tundra
b)
Taiga
c)
Temperate Forest
d)
Desert
84.
Which biome is home to jaguars, anacondas, leopards, gorillas, and poisonous tree frogs?
a)
Grasslands
b)
Temperate Forest
c)
Rainforest
d)
Tundra
85.
Which biome could an animal who hibernates in the winter to survive the cold live in?
a)
Grasslands
b)
Taiga
c)
Desert
d)
Rainforest
86.
In which biome does an organism have to be able to conserve water to survive?
a)
Rainforest
b)
Taiga
c)
Desert
d)
Temperate Forest
87.

Which biome has the least amount of biodiversity? (the least different kinds of organisms)

a)

tropical rain forest

b)

savanna

c)

grassland

d)

desert

88.

Which biome is the driest? It receives less than 10 inches of rain a year.

a)

desert

b)

grassland

c)

deciduous forest

d)

tropical rain forest

89.

In which biome would you find giraffes and elephants?

a)

desert

b)

deciduous forest

c)

savanna

d)

tundra

90.

In which biome would you find permafrost? This is the layer of soil that is frozen all the time.

a)

coniferous forest (taiga)

b)

desert

c)

tundra

d)

grassland

91.

In which biome would you find the best soil? It is called the “Breadbasket of the United States.

a)

grassland

b)

tundra

c)

desert

d)

tropical rain forest

92.

Which biome has the worst soil because so much vegetation grows there that are the nutrients are in the trees and plants?

a)

tundra

b)

desert

c)

tropical rain forest

d)

grassland

93.

Which biome gets the most amount of rain every year?

a)

decidious forest

b)

tropical rain forest

c)

desert

d)

tundra

94.

Which biome has the greatest amount of biodiversity? (the most different kinds of organisms)

a)

tundra

b)

grassland

c)

desert

d)

tropical rain forest

95.

Which biome has trees that lose their leaves in the fall and regrow them in the spring?

a)

deciduous forest

b)

coniferous forest (taiga)

c)

tropical rain forest

d)

desert

96.

Which biome is the coldest?

a)

tundra

b)

desert

c)

grassland

d)

savanna

97.

Which biome has conifer trees or evergreens? These trees have needles that are coated in a waxy substance and drop cones.

a)

deciduous forest

b)

desert

c)

coniferous forest (taiga)

d)

tropical rain forest

98.

Which biome is found around the equator where it is warm all year long?

a)

tundra

b)

tropical rain forest

c)

grassland

d)

coniferous forest (taiga)

99.

Which biome has all four seasons and they are distinct? (you can tell which season it is)

a)

tropical rain forest

b)

desert

c)

deciduous forest

d)

grassland

100.

Which biome is the warm and very wet forest?

a)

tundra

b)

tropical rain forest

c)

coniferous forest (taiga)

d)

deciduous forest

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