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Ecosystems

Total questions: 112

Worksheet time: 2hrs 28mins

Name
Class
Date
1.

Air is a biotic factor.

a)

TRUE

b)

FALSE

2.

What are the living and nonliving things in an environment or area?

a)

predator

b)

producer

c)

ecosystem

d)

abiotic factor

3.

An organism that can make its own food

a)

decomposer

b)

producer

c)

consumer

4.

Breaks down and feeds on the remains of other organisms

a)

decomposer

b)

consumer

c)

producer

5.

Small consumers that are hunted and eaten by larger consumers

a)

producer

b)

prey

c)

predator

6.

Interacting food chains found in an ecosystem

a)

food web

b)

food chain

c)

predator

7.

An animal that hunts and eats other animals for energy

a)

prey

b)

predator

c)

decomposer

8.

These organisms cannot make their own food; they must eat something for energy

a)

decomposer

b)

consumer

c)

producer

9.

NON-living things found in an ecosystem

a)

biotic

b)

abiotc

c)

habitat

10.

LIVING things in an ecosystem

a)

biotic

b)

abiotic

c)

ecosystem

11.

Choose the producer.

a)

rock

b)

tree

c)

cow

d)

bird

12.

Choose the decomposer.

a)

grass

b)

elephant

c)

bacteria

d)

bird

13.

Choose the consumer.

a)

mushroom

b)

horse

c)

tree

d)

grass

14.

Choose the abiotic factor.

a)

sunflower

b)

dog

c)

cat

d)

table

15.

Where does the food chain START?

a)

with consumers that eat grass

b)

with the sun giving energy to producers

c)

with the sun giving energy to consumers

d)

with consumers eating other consumers

16.

A decomposer is also a producer.

a)

True

b)

False

17.

Which of the following are factors that could cause extinction?

a)

Destruction of animals' habitat

b)

Climate change

c)

Pollution

d)

Increased human population (more people)

e)

ALL of the above could cause extinction

18.

What is scarcity and how could it affect an ecosystem?

a)

Too many animals or plants in an area can cause the ecosystem to fail.

b)

Too many animals or plants in an area can cause the animals to be too fat.

c)

Too few animals or plants in an area can cause other animals to go hungry or die.

d)

Too few animals or plants in an area can cause pollution.

19.

Which of these living things is a producer?

a)

horse

b)

cow

c)

fly

d)

grass

20.

Explain the flow of energy in this food chain (who passes energy to who).

a)

The hawk gives energy to the snake. The snake gives energy to the mouse. The mouse gives energy to the grasshopper who gives energy to the grass.

b)

The mouse gives energy to the hawk. The snake gives energy to the grasshopper. The grass gives energy to the snake.

c)

The grass gives energy to the grasshopper. The grasshopper gives energy to the mouse. The mouse gives energy to the snake who gives energy to the hawk.

21.

Which of the following animals are carnivores?

I Tiger

II Eagle

III Rabbit

IV Chicken

a)

I and II

b)

I and IV

c)

II and III

d)

III and IV

22.

Which of the following is the herbivore?

a)

P

b)

Q

c)

R

d)

S

23.

Which of the following animals are herbivores?


I Crocodile


II Duck

III Elephant

IV Rabbit

a)

I and II

b)

I and III

c)

II and IV

d)

III and IV

24.

Which of the following arrangement is the correct food chain?

a)

R → P → Q → S

b)

Q → R → P → S

c)

P → Q → R → S

d)

Q → P → R → S

25.
A DECOMPOSER
a)
Makes its own energy
b)
Eats other organisms
c)
Eats DEAD organisms
26.
A MUSHROOM is a
a)
Herbivore
b)
Carnivore
c)
Omnivore
d)
Decomposer
27.
Which is the PRODUCER?
a)
Lettuce
b)
Slug
c)
Bird
d)
Cat
28.
Which is a HERBIVORE?
a)
Lettuce
b)
Slug
c)
Bird
d)
Cat
29.
Which is/are CARNIVORES?
a)
Slug and Bird
b)
Slug and Cat
c)
Bird and Cat
d)
Cat only
30.
Where does the BIRD get its energy?
a)
The sun
b)
The slug
c)
The bird
d)
The cat
31.
Where does the CAT get its energy?
a)
The sun
b)
The slug
c)
The bird
d)
The cat
32.
Where does the PHYTOPLANKTON get its energy?
a)
The sun
b)
The Zooplankton
c)
The small fish
d)
The killer whale
33.
Where does the ZOOPLANKTON get its energy?
a)
The sun
b)
The Zooplankton
c)
The small fish
d)
The phytoplankton
34.
Where does the SMALL FISH get its energy?
a)
The sun
b)
The Zooplankton
c)
The small fish
d)
The phytoplankton
35.
What is PHOTOSYNTHESIS?
a)
How plants get energy
b)
How animals get energy
c)
How pictures are made
36.
According to this food chain, which is the SECONDARY CONSUMER?
a)
Bee
b)
Dog
c)
Frog
d)
Chicken
37.
the entire Earth 
a)
biosphere 
b)
community 
c)
ecosystem 
38.
plants, rocks, air, sunlight, water, 
a)
ecosystem 
b)
population 
c)
community 
39.
the sun 
a)
abiotic 
b)
biotic 
40.

What is an ecosystem?

a)

A community of non-interacting organisms and their physical environment.

b)

A biological community of interacting organisms and their chemical environment.

c)

A biological community of interacting organisms and their physical environment.

d)

A community of non-interacting organisms and their chemical environment.

41.

What is a biotic factor?

a)

Any non-living component that affects the population of another organism, or the environment.

b)

Any living component that has a population.

c)

Any living component that affects the population of another country.

d)

Any living component that affects the population of another organism, or the environment.

42.

What is a food web?

a)

A system of intraconnecting chains linked together to show the feeding relationships of organisms in an ecosystem.

b)

A system of interconnecting chains linked together to show the feeding relationships of organisms in an ecosystem.

c)

A system of interlocking chains that show a relationship between non-living things.

d)

A system on intralocking chains that show a relationship between non-living things.

43.
Dead matter and waste would pile up without which type of organism?
a)
decomposer
b)
consumer
c)
producer
44.
Which would be the impact on producers and consumers if the decomposers in an ecosystem suddenly disappeared?
a)
There will be less nutrients available.
b)
There will be a decreased amount of oxygen.
c)
There will be an increase in atmospheric carbon.
d)
There will be an excess amount of energy available.
45.
Which best describes the relationship between decomposers and producers?
a)
Decomposers provide producers with water.
b)
Decomposers absorb nutrients produced in the soil.
c)
Producers release energy from the sun through decomposers.
d)
Producers absorb nutrients from decomposed material in the soil.
46.
What is the process called where plants make their own food?
a)
photogenesis
b)
photosynthesis
c)
energy pyramid
d)
food chain
47.
What is one thing that comes out as a result of photosynthesis?
a)
oxygen
b)
water
c)
carbon dioxide
d)
herbivore
48.
What is one thing a plant needs for photosynthesis?
a)
oxygen
b)
sugar
c)
carbon dioxide
d)
hervivore
49.

What is an illustration that has arrows and shows how energy is passed from one living thing to another?

a)

consumer

b)

energy pyramid

c)

food chain

d)

producer

50.

What is an illustration in the shape of a pyramid that shows how much energy is passed from level to another?

a)

food chain

b)

energy pyramid

c)

omnivore

d)

food web

51.

What percent of the energy/biomass is transferred to the next trophic level?

a)

80%

b)

20%

c)

90%

d)

10%

52.

What percentage of the energy/biomass is used by the organisms for maintenance, growth and reproduction, waste, and movement?

a)

80%

b)

20%

c)

90%

d)

10%

53.

How does a pyramid model represent the 10% rule for energy transfer in a food chain?

a)

The model shows that 10 percent less energy is available in upper trophic levels.

b)

The model shows that each level requires more energy from the level below because only 10 percent becomes biomass at the next level.

c)

The model shows that only 10 percent of the biomass becomes energy.

d)

The model shows that each trophic level needs 10 percent more energy, so it needs more biomass in the lower trophic levels.

54.

Does a healthy ecosystem produce the same amount of biomass at each trophic level?

a)

Yes

b)

No

55.

Energy is necessary for maintenance, movement, waste, and growth and reproduction.

a)

True

b)

False

56.
Occurs when a population becomes so large that it causes damage to the environment
a)
Competition
b)
Overpopulation
c)
Predation
d)
Mutualism
57.
A model that shows how energy flows in an ecosystem through feeding relationships
a)
Commensalism
b)
Parasitism
c)
Food web
d)
Food chain
58.
A model of energy transfer that can show how the food chains in a community are interconnected
a)
Commensalism
b)
Parasitism
c)
Food web
d)
Food chain
59.
A large ecosystem is called a ______
a)
Ecosystem
b)
Habitat
c)
Biome
d)
Niche
60.
What is the main factor that separates the biomes?
a)
Land
b)
Water
c)
Climate
d)
Longitude
61.
Which biome is the driest?
a)
Desert
b)
Tundra
c)
Taiga
d)
Rainforest
62.

Which of the following is most likely to cause the greatest disruption to an ecosystem?

a)

Emptying an aquarium containing non-native species into a local waterway

b)

Cutting down a small cedar tree to make holiday decorations

c)

Cleaning the windshield of a car with an alcohol-based class cleaner

d)

Mowing the lawn in a city park

63.

The overgrowth of algae poses a major problem for coral reefs. Intensive fishing is one factor that contributes to algae overgrowth because it does which of the following?

a)

Allows more sunlight to be available to algae

b)

Inhibits the spread of pathogens in algae colonies

c)

Reduces the number of organisms that feed on algae

d)

Increases the competition between different algae species

64.

What would most likely happen if an ecosystem no longer received sunlight?

a)

The number of herbivores would increase

b)

The number of plants would increase

c)

all organisms would adapt

d)

All living organisms would eventually die

65.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
66.

Examples of how humans negatively affect local ecosystems are

a)

Building dams, deforestation, building roads and structures, and salting roads.

b)

Creating laws to prohibit fishing from local streams.

c)

Planting trees and other plants to attract native species.

d)

Removing non-native species from the environment.

67.

The milkweed plant serves an important role in the life cycle of the monarch butterfly. Adult monarchs lay their eggs in the milkweed plant, and then the monarch caterpillars eat that same plant during their development.

Based on the relationship between monarchs and milkweed, what is one reasonable prediction a scientist could make?

a)

If the milkweed population goes down, the monarch population will do down.

b)

Population of monarch butterflies should remain constant when milkweed population decreases.

c)

A decrease in the milkweed population would cause a monarch butterfly population increase.

d)

If the population of milkweeds remains constant (the same), the monarch butterfly population increases.

68.

_____________ is a community consisting of all of the living and nonliving interactions between organisms and the environment.

a)

ecosystem

b)

population

c)

organism

d)

species

69.

The term ______________ refers to all the members of the same species in an area.

a)

population

b)

organism

c)

species

d)

community

70.

The biotic and abiotic factors that work together in an area.

a)

ecosystem

b)

population

c)

community

d)

organism

71.

The biotic factors within an ecosystem are the ___________ parts.

a)

nonliving

b)

living

c)

relationships

d)

chemical

72.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
73.
What is the ultimate ORIGINAL source of energy for living things
a)
Sugar
b)
Sun
c)
Moon
d)
Carbon Dioxide
74.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
75.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
76.
Plants need ________ for photosynthesis
a)
oxygen
b)
soil
c)
carbon dioxide
d)
sugar
77.
What is photosynthesis?
a)
The process in which humans eat their food
b)
When a photographer takes a photo.
c)
To get your pictures from the photo lab.
d)
The process in which plants make their food.
78.
Leaves look green because.....
a)
they eat their vegetables
b)
to blend into their environment
c)
they contain a molecule named chlorophyll
d)
they are sick
79.
What process is the diagram representing?
a)
Photosynthesis
b)
Soil development
c)
Plant reproduction
d)
Nitrogen Cycle
Nitrogen cycle
80.
What is produced as a result of photosynthesis?
a)
Glucose and Chlorophyll
b)
Glucose and Oxygen
c)
Water and Light energy
d)
Carbon dioxide and Water
81.
Which statement about photosynthesis is correct?
a)
Plants get the energy they need for photosynthesis from water.
b)
Plants get the energy they need for photosynthesis from soil.
c)
Plants get the energy they need for photosynthesis from sunlight.
d)
Plants do not require energy to perform photosynthesis.
82.
Which of the following is not needed for photosynthesis to occur?
a)
sunlight
b)
carbon dioxide
c)
water
d)
oxygen
83.

Which part of a plant anchors the plant to the ground and soaks up water and minerals?

a)

stem

b)

leaves

c)

roots

d)

petals

84.

Where is the main site of photosynthesis on a plant?

a)

Stem

b)

Leaves

c)

Petals

d)

Pollen

85.

What does the law of conservation of mass state?

a)

matter is created and destroyed

b)

matter can be lost and created

c)

matter is not lost or created, but transferred

d)

matter can only be lost

86.

Which statement describes an animal?

a)

They go through photosynthesis.

b)

They need food, water, shelter, space, and oxygen to live

c)

They have xylem and phloem in their stems

d)

They have cell walls.

87.
Which of the following is an example of how an animal can help a plant reproduce?
a)
A bee pollinates a plant as it moves from flower to flower.
b)
A bird builds a nest high in the branches of a tree.
c)
A deer eats a patch of grass as it grazes in the forest.
d)
The Sun provides the energy a plant uses to make food.
88.
Which of the following is true?
a)
Plants always need air to live.
b)
Plants get air from the Sun.
c)
Plants can live without air.
d)
Plants only need air in the winter.
89.

What is Hydroponic?

a)

Method of gardening using labor

b)

Method of farming using nutrient

c)

Method of gardening does not use soil

d)

Method of farming using media

90.

The benefit of Hydroponic, EXPECT

a)

Save water

b)

Less soil

c)

More time

d)

No need weeding

91.

What is hydroponics?

a)

Water-based, growing plants without soil

b)

Growing in soil

c)

The use of fish to act as a fertilizer for plants

d)

Growing plants that are suspended in the air

92.

What is the process called when light, carbon dioxide and water are converted into energy?

a)

Transpiration

b)

Respiration

c)

Photosynthesis

d)

Osmosis

93.

What is hydroponic gardening?

a)

Grow plants with the use of soil.

b)

Grow plants without the use of soil.

94.

To provide the necessary nutrients in plants, it is necessary to use soil.

a)

True

b)

False

95.

What problems do hydroponics solve?

a)

Hydroponics solves the problem of invasive species of plants.

b)

Hydroponics solves the problem of plants not getting enough energy from the sun.

c)

Hydroponics solves the problems of not having enough land, having poor soil, harsh climates, and drought.

96.

What do plants primarily need to survive?

a)

Water and air

b)

Oxygen

c)

Soil

d)

Fish

97.
This part of the plant acts like an "elevator" carrying nutrients to the plant.
a)
roots
b)
stem
c)
leaves
d)
flower
98.

To provide the necessary nutrients to in plants, it is necessary to use soil.

a)

True

b)

False

99.
The source of energy plants use to make food
a)
photosynthesis 
b)
air 
c)
sunlight 
d)
soil 
100.
what is this called
a)
aquaponics
b)
Hydroponics
c)
photosynthisis
d)
hydroculture
101.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
102.
In the energy pyramid below, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
103.
This diagram shows the amount of energy that moves from one feeding level to another in a food web.
a)
Energy Pyramid
b)
Food Web
c)
Ecosystem
d)
Food Chain
104.
In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores?
a)
10%
b)
20%
c)
80%
d)
90%
105.
If these organisms were arranged in a food pyramid, which organism would have the least amount of total energy available?
a)
coyote
b)
insect
c)
lizard
d)
shrub
106.
Which organism recieves the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
107.
Which level will contain plants?
a)
A
b)
B
c)
C
d)
D
108.
The largest group of organisms found in a food web would be:
a)
Primary Consumers
b)
Producers
c)
Decomposers
d)
Tertiary Consumers
109.
A food pyramid represent the relative amount of energy in trophic levels. Which of the following correctly shows a food pyramid?
a)
A
b)
B
c)
C
d)
D
110.
A third-level consumer has to be which type?
a)
Carnivore.
b)
Decomposer.
c)
Producer.
d)
Herbivore.
111.
A secondary consumer 
a)
eats primary consumers
b)
eats producers
c)
eats plants
112.
Position that an organism occupies based on what it eats
a)
biomass
b)
autotroph
c)
trophic level
d)
carnivore

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