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Matter and Energy in Ecosystems Review

Total questions: 60

Worksheet time: 2hrs 9mins

Name
Class
Date
1.
Most producers get energy from the Sun using the process of
a)
cellular respiration
b)
chemosynthesis
c)
photosynthesis
d)
consumption
2.
Decomposers are important to ecosystems because they
a)
return vital nutrients to the ecosystem
b)
capture energy from the Sun
c)
are producers
d)
can be omnivores
3.
What are the products of photosynthesis?
a)
Carbon dioxide and water
b)
Carbon dioxide and oxygen
c)
Glucose and oxygen
d)
Glucose and water
4.
A consumer gets energy by
a)
absorbing sunlight.
b)
breaking down dead organisms.
c)
soaking it up from the ground.
d)
feeding on other organisms.
5.
The cycling of matter is important because
a)
Matter can be created and destroyed
b)
Only a limited amount of matter is available so it has to be recycled
c)
Matter can only be found in a solution
d)
Bacteria use matter to convert organisms into solar energy
6.

Plants, animals, and decomposers (which consume dead things) are in a forest ecosystem. Scientists are studying photosynthesis in the forest. Which group or groups of organisms should they study?

a)

all organisms in the forest

b)

animals and decomposers

c)

plants and decomposers

d)

plants

7.

A jungle ecosystem has plants, animals, and decomposers (which consume dead things). Scientists are interested in studying cellular respiration in the jungle. Which group or groups of organisms should they study?

a)

plants

b)

animals and decomposers

c)

all organisms in the jungle

d)

animals

8.
What are the products of cellular respiration?
a)
Energy (ATP), Water, and Carbon DIoxide.
b)
Water and Oxygen
c)
Oxygen and Carbon Dioxide
d)
Water and Energy (ATP)
9.
Where does cellular respiration take place in the cell?
a)
Cell Membrane
b)
Nucleus
c)
Mitochondria
d)
Vacuole
10.
What kind of things perform cellular respiration?
a)
All living cells
b)
plants only
c)
animals only
d)
yeast only
11.
Respiration is the process by which animals take in _____ and release _____. 
a)
photosynthesis, air
b)
carbon, oxygen
c)
oxygen
d)
oxygen, carbon dioxide
12.
Which of the following is an example of a food producer?
a)
Human
b)
Grizzly Bear
c)
Orca
d)
Oak Tree
13.
How is the sun a part of a food chain?
a)
it is eaten
b)
it is the energy source
c)
it feeds animals
d)
it tastes good
14.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
15.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
16.
Which is the correct sequence to show how organisms live in an environment?
a)
decomposer-->consumer-->producer
b)
consumer-->decomposer-->producer
c)
producer-->decomposer-->consumer
d)
producer-->consumer-->decomposer
17.

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

18.

Water, in liquid or solid form, that falls from the atmosphere

a)

precipitation

b)

condensation

c)

evaporation

d)

nitrogen fixation

19.

the process that changes atmospheric nitrogen into nitrogen compounds that are usable by living things

a)

nitrogen fixation

b)

precipitation

c)

evaporation

d)

cellular respiration

20.

The process by which a gas changes to a liquid

a)

condensation

b)

evaporation

c)

precipitation

d)

glycolysis

21.

The process of a liquid changing to a gas at the surface of the liquid

a)

evaporation

b)

condensation

c)

precipitation

d)

nitrogen fixation

22.
if there is a fire in a forest, there will be less _ in the environment?
a)
nitrogen
b)
oxygen
23.
All of the carbon in existence is continually recycled in the carbon cycle
a)
True
b)
False
24.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
25.
Which process converts carbon in the form of sugar into carbon dioxide gas?
a)
Bioremediation
b)
Photosynthesis
c)
Respiration
d)
Transpiration
26.

If the plant population decreased, the amount of carbon in the atmosphere would _________.

a)

Stay the same

b)

Increase

c)

Decrease

27.

Plants use ____________ to make their own food

a)

Water

b)

Sunlight

c)

Carbon dioxide

d)

All of these

28.

Carbon atoms cannot be created or destroyed

a)

True

b)

False

c)

Not enough information to answer

29.

Which describes how the atoms in living things cycle?

a)

through living parts of an ecosystem

b)

in one direction from living to nonliving parts of the ecosystem

c)

in one direction from nonliving to living parts of the ecosystem

d)

repeatedly back and forth through living and nonliving parts of the ecosystem

30.

What is the source of carbon atoms in plants cells?

a)

they were created as the plant grew

b)

the Sun

c)

water molecules

d)

the environment surrounding the plant

31.

What happens to food molecules as matter moves through an organism?

a)

The parts of food molecules are rearranged to make new molecules or release energy.

b)

The molecules are destroyed.

c)

New matter is created from chewed up food

32.

Which of the following flows through ecosystems in one direction?

a)

carbon

b)

energy

c)

nitrogen

d)

water

33.

Energy cycles through ecosystems because it returns to the Sun.

a)

True

b)

False

34.

Available energy increases as it is transferred from one organism to another in a food chain.

a)

True

b)

False

35.

Which of the following would eat a dead rabbit?(Keyword is DEAD)

a)

decomposer(detritivores)

b)

herbivore

c)

omnivore

36.

Which of the following would eat a hamburger with lettuce on it?

a)

carnivore

b)

omnivore

c)

herbivore

d)

detritivore

37.

Which of the following would eat only leaves?

a)

omnivore

b)

herbivore

c)

carnivore

d)

detritivore

38.

Which is most likely to be the FIRST step in a basic food chain?

a)

The snake obtains energy by eating the mouse

b)

Plants make energy-rich food using sunlight

c)

The Sun emits energy

d)

The hawk obtains energy by eating the snake

39.

Which of the following organisms would NOT be in the first trophic level of an energy pyramid?

a)

dog

b)

tree

c)

grass

d)

algae

40.

As you move upward, from level to level, in an energy pyramid, available energy _________.

a)

decreases

b)

increases

c)

stays the same at each level

d)

is destroyed

41.

Elements such as oxygen, nitrogen, and carbon cycle through a system once.

a)

True

b)

False

42.

Nitrogen, as it is found in the atmosphere, can be used by plants and animals.

a)

true

b)

false

43.

Which of the following does NOT move continuously through ecosystems?

a)

Water

b)

nitrogen

c)

carbon

d)

aluminum

44.

Which of the following is not part of the water cycle?

a)

nitrogen fixation

b)

precipitation

c)

condensation

d)

evaporation

45.

Which of the following steps in the nitrogen cycle takes place after animals eat plants?

a)

decaying waste returns nitrogen to the soil

b)

bacteria on plant roots fix nitrogen to make it usable

c)

plants use nitrogen from the soil

d)

lightning changes nitrogen gas into nitrogen compounds

46.

Which of the following is not an example of how bacteria aid in the nitrogen cycle?

a)

nitrogen fixation

b)

breaking down the tissue of dead organisms

c)

changing nitrogen compounds to atmospheric nitrogen

d)

infecting tissue

47.

Phytoplankton are said to release how much oxygen in Earth's atmosphere?

a)

between 5% and 10%

b)

between 15% and 20%

c)

less than 5%

d)

more than 50%

48.

Which process can release carbon to the air and into the soil?

a)

photosynthesis

b)

decomposition

c)

combustion

d)

cellular respiration

49.

Which of the following is NOT a way that carbon is stored in the environment as a fossil fuel?

a)

water

b)

coal

c)

oil

d)

natural gas

50.

Chloroplasts are the location of photosynthesis.

a)

true

b)

false

51.

Water is a product of cellular respiration

a)

true

b)

false

52.

Cellular respiration is the process in which organisms break down food to release________.

a)

energy

b)

nutrients

c)

sugar

d)

oxygen

53.

Photosynthesis is the process in which plants use energy from light to produce_______.

a)

new cells

b)

organelles

c)

food

d)

none of these

54.

Carbon dioxide is used by plants for photosynthesis.

a)

True

b)

False

55.

All organisms contain carbon.

a)

true

b)

false

56.

Water covers about 70% of the Earth's surface.

a)

True

b)

false

57.

About 97% of the Earth's water is in the oceans.

a)

true

b)

false

58.

___________ is a part of proteins, which all organisms need to stay alive

a)

carbon

b)

oxygen

c)

nitrogen

d)

phosphorus

59.

The Earth's atmosphere is mostly

a)

nitrogen

b)

carbon

c)

oxygen

d)

helium

60.

Most of the oxygen in Earth's atmosphere comes from

a)

cellular respiration

b)

photosynthesis

c)

space

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