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8.3.3 Ecosystems - LONG

Total questions: 74

Worksheet time: 43mins

Name
Class
Date
1.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
2.

How would animals be affected by a decrease in trees?

a)

Animals require carbon dioxide which trees create through photosynthesis so if there are less trees, there would be more animals able to survive.

b)

Animals require carbon dioxide which trees create through photosynthesis so if there are less trees, there would be less animals able to survive.

c)

Trees require oxygen which animals create through photosynthesis so if there are less trees, there would be more animals able to survive.

d)

Animals require oxygen which trees create through photosynthesis so if there are less trees, there would be less animals able to survive.

3.

The two processes of photosynthesis and cellular respiration are opposites of one another. This means that the products of one are the reactants in the other.

a)

True

b)

False

4.

How is carbon returned to the atmosphere? [mark all correct answers]

a)

burning fossil fuels

b)

as a product of cell respiration

c)

as a reactant in photosynthesis

d)

decomposition of dead organisms

5.

Carbon travels through both living and nonliving components of the ecosystem.

a)

True

b)

False

6.

As you move up the trophic levels, the amount of organisms decreases.

a)

True

b)

False

7.

Which of the following are ways are used to illustrate the transfer of matter and energy in an ecosystem?

[mark all correct answers]

a)

food webs

b)

food chains

c)

food pyramids

8.

How much energy is transferred from one trophic level to the next?

a)

1%

b)

10%

c)

15%

d)

25%

e)

75%

9.

The energy on Earth that all living things require to live and carry out their life functions starts with the Sun.

a)

True

b)

False

10.

If you remove one part of an ecosystem, it can damage the rest of the ecosystem.

a)

True

b)

False

11.

An organism that can make its own food

a)

decomposer

b)

producer

c)

consumer

12.
What does a Primary Consumer eat?
a)
Tertiary Consumers
b)
Secondary Consumers
c)
Producers
13.
All food webs and food chains begin with _________________.
a)
primary consumer
b)
producers
c)
secondary consumers
d)
predators
14.
The many overlapping food chains in an ecosystem make up an
a)
food web
b)
niche
c)
energy pyramid
d)
feeding level
15.
What is an organism that breaks down & absorbs dead matter so nutrition can be recycled into the soil?
a)
Consumer
b)
Decomposer
c)
Producers
d)
Scavenger
16.
Which is a producer?
a)
deer
b)
grass
c)
lion
d)
worm
17.
How many carnivores are shown in this food web?
a)
6
b)
4
c)
5
d)
3
18.

The living and nonliving things in an area.

a)

predator

b)

producer

c)

ecosystem

d)

abiotic factor

19.

____________________ is a part of oceans, air, rocks, soil, and all living things.

a)

Nitrogen

b)

Water

c)

Carbon

d)

Silver

20.

When animals eat plants, the carbon that the plant contains is absorbed by the animals.

a)

True

b)

False

21.

Carbon moves from fossil fuels to the atmosphere when fuels are burned.

a)

True

b)

False

22.

What will happen to a population if they do not have enough resources?

a)

The population will grow bigger

b)

The population will all die

c)

The population will have to move away or they will die

d)

The population will sit and wait for new resources

23.

What will happen to the rabbit population if the owl population becomes bigger?

a)

The rabbit population will become smaller

b)

The rabbit population will become bigger

c)

The rabbit population will stay the same

24.

Why are decomposers important in an ecosystem?

a)

They directly give energy to consumers.

b)

They break down dead things and put nutrients back in the ground.

c)

They are not important they are harmful.

25.
Use the diagram to answer the question.
The Mayfly is a food source for which 3 organisms?
a)
Frog, Dragon Fly and snake
b)
Frog, trout and dragon fly
c)
Frog, salamander and trout
d)
Frog and phytoplankton
26.
The direction of the flow of energy in a food web is represented by ___.
a)
Light bulbs
b)
Dotted Lines
c)
Arrows
d)
Bubbles
27.
Which organism gets its energy by eating sea otters?
a)
Sea urchins
b)
Sea Stars
c)
Sharks
d)
Large crabs
28.

When an organism eats, it gains all the matter and energy that was in the food.

a)

True

b)

False

29.

What is an apex predator?

a)

The top animal in a food chain or food web.

b)

A producer

c)

Prey

d)

The bottom animal in a food chain or food web.

30.
When the last member of a species dies, the species becomes
a)
extinct
b)
endangered
c)
threatened
d)
dead
31.
An animal that is hunted by other animals for food is called _____________________ .
a)
Victim
b)
Sally
c)
Predator
d)
Prey
32.
An animal that hunts other animals for food is called a ___________________.
a)
Villian
b)
Predator
c)
Prey
d)
Fred
33.
A ____________ breaks down waste or dead organisms and recycles nutrients.
a)
consumer
b)
producer
c)
decomposer
d)
omnivore
34.
Which is an example of a biotic factor in a desert?
a)
Sun
b)
soil
c)
snake
d)
minerals
35.
Which is an example of an abiotic factor in a desert?
a)
Sun
b)
cactus
c)
scorpion
d)
snake
36.
What is the name for moving to a different place to meet your basic needs?
a)
migrate
b)
immigrate
c)
navigate
d)
move
37.
An ecosystem is made up of _______ and ________ things.
a)
Living and nonliving
b)
Alive and dead
c)
Plants and animals
d)
Land and water
38.
What does the word organism mean?
a)
Living thing
b)
Nonliving thing
c)
Organs in your body
d)
Organ player
39.
What is another word for an animal's home?
a)
Habitat
b)
Niche
c)
Population
d)
Organism
40.
What is the role an organism plays in its ecosystem?
a)
Habitat
b)
Niche
c)
Organism
d)
Population
41.

Which diagram can show us the AMOUNT OF ENERGY that flows from producers to consumers?

a)

Food chain

b)

Food web

c)

Food pyramid

42.

What's the difference between a food chain and a food web?

a)

Energy flows in many directions in a food chain and only in one direction in a food web

b)

Energy flows in many directions in a food web and only in one direction in a food chain

c)

All ecosystems have food chains but not all ecosystems have food webs

43.

How many consumers can you see in this picture?

a)

2

b)

4

c)

6

d)

8

44.

In the food chain shown, which is the PRODUCER?

a)

The sun

b)

The tree

c)

The mouse

d)

The snake

45.

What will happen to the rabbit population if the owl population becomes bigger?

a)

The rabbit population will become smaller

b)

The rabbit population will become bigger

c)

The rabbit population will stay the same

46.

Why are decomposers important in an ecosystem?

a)

They directly give energy to consumers.

b)

They break down dead things and put nutrients back in the ground.

c)

They are not important they are harmful.

47.

TRUE OR FALSE?

The sun is the main source of energy for all of life on earth.

a)

True

b)

False

48.
A food web is composed of many...
a)
food webs
b)
food chains
c)
fast-food chains
d)
bike chains
49.

In the food chain shown, which is the PRIMARY Consumer?

a)

The insect

b)

The tree

c)

The mouse

d)

The snake

50.
In an Energy Pyramid, the most energy is located...
a)
at the top
b)
at the bottom
c)
in the middle
d)
in the center
51.
A series of events in which one organism eats another and obtains energy is called a
a)
ecosystem
b)
food web
c)
food chain
d)
Pokemon (Gotta Catch 'Em All!)
52.
An organism that can make its own food is called a 
a)
consumer
b)
producer
c)
decomposer
d)
composer
53.
An organism that obtains energy by feeding on other organisms is called a
a)
consumer
b)
producer
c)
decomposer
d)
brujeria
54.

In the food chain shown, which is the SECONDARY Consumer?

a)

The insect

b)

The tree

c)

The mouse

d)

The snake

55.
An organism that breaks down waste and dead organisms is called a
a)
consumer
b)
producer
c)
decomposer
d)
Mr. Gallego
56.
A consumer that eats only other organisms is called a
a)
herbivore
b)
carnivore
c)
omnivore
d)
scavenger
57.
A specialized organism that only eats dead organisms is called a
a)
scavenger
b)
carnivore
c)
omnivore
d)
herbivore
58.
There are 3 kinds of consumers:
a)
carnivore, herbivore, omnivore
b)
decomposer, consumer, producer
c)
meat, vegetable, grain
d)
protein, carb, fat
59.

In the food chain shown, which is the TERTIARY Consumer?

a)

The insect

b)

The tree

c)

The mouse

d)

The snake

60.
Nonliving parts of an ecosystem are called
a)
abiotic factors
b)
biotic factors
c)
rocks and dirt
d)
funiture
61.
Living parts of an ecosystem are called
a)
biotic factors
b)
abiotic factors
c)
crazy critters
d)
animals and plants
62.

In the food chain shown, which is the Apex Predator?

a)

The insect

b)

The tree

c)

The mouse

d)

The snake

63.

Which of the following describes the PLANT in the food chain shown?

a)

Autotroph

b)

Heterotroph

c)

Primary Consumer

d)

Apex Predator

64.

Which 2 of the following describes the GRASSHOPPER in the food chain shown?

a)

Autotroph

b)

Carnivore

c)

Herbivore

d)

Heterotroph

e)

Omnivore

65.

Which 2 of the following describes the GRASS in the Food Web shown?

a)

Producer

b)

Secondary Consumer

c)

Heterotroph

d)

Autotroph

e)

Primary Consumer

66.

Which 2 of the following describes the RABBIT in the Food Web shown?

a)

Producer

b)

Secondary Consumer

c)

Heterotroph

d)

Autotroph

e)

Primary Consumer

67.

Which 2 of the following describes the BIRD in the Food Web shown?

a)

Producer

b)

Secondary Consumer

c)

Heterotroph

d)

Autotroph

e)

Primary Consumer

68.

Which 2 of the following describes the HAWK in the Food Web shown?

a)

Producer

b)

Apex Predator

c)

Heterotroph

d)

Autotroph

e)

Primary Consumer

69.

Which of the following describes the HAWK in the Food Web shown?

a)

Producer

b)

Carnivore

c)

Omnivore

d)

Herbivore

70.

Which of the following describes the BIRD in the Food Web shown?

a)

Producer

b)

Carnivore

c)

Omnivore

d)

Herbivore

71.

Which of the following describes the SQUIRRELL in the Food Web shown?

a)

Producer

b)

Carnivore

c)

Omnivore

d)

Herbivore

72.

Which of the following describes the TREE in the Food Web shown?

a)

Producer

b)

Carnivore

c)

Omnivore

d)

Herbivore

73.

Which of the following describes the LARGE CAT in the Food Web shown?

a)

Producer

b)

Carnivore

c)

Omnivore

d)

Herbivore

74.

How much energy gets passes from one level of the food chain to the next?

a)

10%

b)

25%

c)

90%

d)

100%

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