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Review for Flow of Energy 7th (FMS)

Total questions: 45

Worksheet time: 40mins

Name
Class
Date
1.

Energy that is needed to initiate the process of photosynthesis is...

a)

Heat

b)

Electrical

c)

Wind

d)

Radiant

2.
All energy transformations in an ecosystem begin with
a)
a scavenger
b)
the sun
c)
a decomposer
d)
a herbivore
3.
an example of producer consumer relationship would be
a)
lion eating a deer
b)
grasshopper getting energy from grass
c)
hawk getting energy from snakes
d)
earthworm breaking down dead material
4.

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.

5.
Which one is NOT an example of a decomposer?
a)
mushroom
b)
leaves
c)
mold
d)
worm
6.
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.
7.
In this food chain, what will happen if the frogs become extinct?
a)
The snakes will increase.
b)
The grasshoppers will decrease.
c)
The eagles will remain the same.
d)
The grasshoppers will increase.
8.
What percentage of energy is passed on to each tropic level?
a)
10%
b)
50%
c)
90%
d)
100%
9.
a deer population has significantly increased, the best hypothesis is 
a)
the deer's main predator has been eliminated
b)
competition increased
c)
decreased water levels of local ponds
d)
organisms that rely on similar food sources migrated to the area
10.
What level consumer could you consider the deer?  
a)
Primary
b)
Secondary
c)
Tertiary
d)
Quarternary
11.
If the sun provides all energy in the Energy Pyramid, and the energy decreases by a division of 10 as you travel up the pyramid, how much energy does the Tertiary Consumer have?  
a)
100%
b)
10,000%
c)
10%
d)
.1%
12.
Virtually all plants are autotrophic.  But there are no autotrophic animals or fungi.  What can you infer about autotrophic organisms?
a)
They can move on their own
b)
They are at the top of the food chain
c)
They can make their own energy
d)
They reproduce slowly
13.
A rabbit eats the grass, the snake eats the rabbit and the hawk eats the snake.  Who has the most energy in this food chain?  
a)
The rabbit
b)
The snake
c)
The hawk
d)
The grass
14.

Organisms that undergo photosynthesis are...

a)

Animals and plants

b)

Plants only

c)

Fungi and plants

d)

Animal and Fungi

15.
A food web, is a series of interconnected food chains put together to represent an environment.  The arrows which represent energy transfer, show energy leaving an organism, to be consumed by another.  Who or what does the rabbit, get its energy?  
a)
grasshopper
b)
fox
c)
rabbit
d)
green plants
16.

The food chain starts with....

a)

the sun

b)

primary producers

c)

primary consumers

d)

decomposers

17.

What is the science word for turning sunlight into food?

a)

Photosynthesis

b)

Cellular Respiration

c)

Decomposition

18.

Which 3 are Inputs for photosynthesis?

(Pick 3)

a)

Carbon Dioxide

b)

Oxygen

c)

Water

d)

Sugar

e)

Sunlight

19.

The gas that plants breathe in is called ____.

a)

Carbon Dioxide

b)

Oxygen

c)

Nitrous Oxide

20.

The sugar plants produce is called ____.

a)

Glucose

b)

Fructose

c)

Lactose

21.

After the plant produces glucose, ___.

a)

It must be used right away.

b)

It must be stored for 3 months before it is used.

c)

It can be used right away or stored for later.

22.

The gas that plants breathe out is called ____.

a)

Carbon Dioxide

b)

Oxygen

c)

Nitrous Oxide

23.

Which of the following is the correct equation for PHOTOSYNTHESIS?

a)

light + carbon dioxide + water --> glucose + oxygen

b)

carbon dioxide + sugar + water --> oxygen + light

c)

oxygen + light + water --> carbon dioxide + sugar

d)

carbon dioxide + oxygen + water --> Light+ Sugar

24.
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
25.

The equation for photosynthesis describes the chemical reaction that occurs. What happens to the light energy that is shown in the reaction?

a)

Destroyed during the reaction

b)

released when the reaction is complete

c)

converted into chemical energy during the reaction

d)

Changed into atoms of carbon and oxygen during the reaction

26.
Who are the primary producers in this food web?  
a)
The lizard and the Hawk
b)
The Grasshopper and the Mouse
c)
The rabbit and the Hawk
d)
The lizard and the snake
27.
A food web, is a series of interconnected food chains put together to represent an environment.  The arrows which represent energy transfer, show energy leaving an organism, to be consumed by another.  Who or what does the rabbit, get its energy?  
a)
grasshopper
b)
fox
c)
rabbit
d)
green plants
28.
What does a food chain represent?
a)
How all living organisms within a habitat are connected.
b)
All of the things that a particular animal eats.
c)
How plants create their own food.
d)
A single path of energy transfer within a habitat.
29.
An organism that produces its own energy
a)
Producer
b)
Consumer
c)
Decomposer
d)
Predator
30.
If the grasshopper were to be removed completely from the food web, what organism would be most effected?
a)
The squirrel
b)
The shrew
c)
The deer
d)
The rabbit
31.

What do the arrows in a food web represent?

a)

The order of size of organisms in the ecosystem

b)

The importance of organisms in the chain

c)

The direction of energy flow through organisms

d)

The energy increases as you move from left to right

32.

Animals are consumers therefore they eat food for energy. Which energy transformation is taking place when an animal eats to stay warm?

a)

Mechanical to thermal

b)

Mechanical to radiant

c)

Chemical to thermal

d)

Radiant to chemical

33.

What products are produced during photosynthesis?

a)

Chloride and sugar

b)

Oxygen and sugar

c)

nitrogen and sugar

d)

Carbon dioxide and sugar

34.

In a food chain what is responsible for transforming radiant energy into chemical energy?

a)

Grass

b)

Prairie dog

c)

Coyote

d)

Soil Bacteria

35.

(a)   is the process in which carbon dioxide and water combine, using energy from the Sun, to make sugar and oxygen.

36.

What pigment captures/absorbs sunlight?

a)

stomata

b)

chlorophyll

c)

chloroplast

d)

phloem

37.

Which product is "waste" and mostly released by the producer (plant)?

a)

oxygen

b)

carbon dioxide

c)

sugar

d)

glucose

38.

What are the 3 reactants of photosynthesis? The reactants are the things needed for photosynthesis to occur.

a)

oxygen, glucose, sunlight

b)

sunlight, oxygen, water

c)

water, oxygen, carbon dioxide

d)

carbon dioxide, sunlight, water

39.
Plants need ________ for photosynthesis
a)
oxygen
b)
soil
c)
carbon dioxide
d)
sugar
40.
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
41.
What is the source of energy for photosynthesis?
a)
carbohydrates-chemical
b)
sunlight-radiant
c)
heat-thermal
d)
television-electrical
42.

What are the products of photosynthesis?

a)

Glucose

b)

sunlight

c)

water

43.

What part of the plant soaks up water for photosynthesis?

a)

roots

b)

leaf

c)

petals

d)

stem

44.

Which elements are used in Photosynthesis?


6H2O + 6CO2 ---> C6H12O6 + 6O2

a)

Carbon

b)

Hydrogen

c)

Oxygen

d)

All of the above

45.

In an energy pyramid, how can you best describe the flow of energy?

a)

As you go higher in the pyramind, the amount of enery increases

b)

There is less energy in a producer level than a consumer level

c)

There is no energy above the level of producers in the system

d)

Each group receives only a small amount of energy from the level below it

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