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Unit 04 7th Science Review

Total questions: 56

Worksheet time: 2hrs 7mins

Name
Class
Date
1.
A pyramid shape is used to show the amount of available energy at each trophic level because... 
a)
energy decreases as you go up the food chain, just like the pyramid shape gets smaller as you go up. 
b)
energy increases up the food chain just like the pyramid shape gets smaller as you go up. 
c)
energy amounts are the same at each trophic level
2.
In this energy pyramid, what is the proper name for ANY ORGANISM ABOVE THE PRODUCER LEVEL?
a)
decomposers
b)
consumers
c)
producers
d)
omnivores
3.
What makes an energy pyramid different than a food web or chain?
a)
It shows energy flowing from the top of the chain and downward. 
b)
The tropic levels are the opposite
c)
It shows the amount of energy in each trophic level
d)
It shows specific predator/prey relationships
4.
True or False: Organisms will always stay in the same trophic level. 
a)
True-- an organism's trophic level is permanent based on the species it is. 
b)
False-- the trophic level an organism belongs to is based on what it is consuming in the food chain. 
5.
What is the sun's role in the energy pyramid?
a)
to produce chemical energy for the ecosystem.
b)
to provide radiant energy for producers to convert to chemical energy. 
c)
to start the energy flow of the ecosystem. 
d)
to provide mechanical energy for producers to convert to chemical energy. 
6.
In the energy pyramid below, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
7.
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.
8.
The fox in this food web would be considered a:
a)
Tertiary Consumer
b)
Producer
c)
Secondary Consumer
d)
Primary Consumer
9.
Question Image

Match the following:

a)

Producer/Autotroph

1.

Plant

b)

Secondary Consumer

2.

Bird

c)

Tertiary Consumer

3.

Snake

d)

Apex Predator

4.

Owl

e)

Herbivore

5.

Grasshopper

10.

Which of the following would be the Apex Predator?

a)

Hammerhead Shark

b)

Octopus

c)

Phytoplankton

d)

Orca

11.
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
12.
When humans burn fossil fuels, most of the carbon quickly enters the _______ as carbon dioxide
a)
water
b)
atmosphere
c)
sun
d)
air
13.
Combustion is another word for
a)
burning
b)
melting
c)
exploding
d)
incinerating 
14.
How do living organisms return carbon to the atmosphere in the carbon cycle
a)

respiration and decomposition

b)

respiration and photosynthesis

c)

death

d)

burning

15.

Humans burn fossil fuels and wood, releasing carbon dioxide into the atmosphere. This carbon dioxide is then absorbed by trees for photosynthesis. These processes are contributory to which chemical cycle?

a)

The carbon cycle

b)

The water cycle

c)

The nitrogen cycle

d)

The phosphorous cycle

16.

How does the human body return carbon to the atmosphere in the carbon cycle?

a)

Waste products

b)

Photosynthesis

c)

Cellular respiration

d)

Formation of glucose

17.

In the carbon cycle, animals can release carbon back into the cycle through __________ or through __________.

a)

burning . . . photosynthesis

b)

fixation . . . decomposition

c)

decomposition . . . photosynthesis

d)

respiration . . . decomposition

e)

respiration . . . photosynthesis

18.

Where does all the carbon in organisms (living things) originate from?

a)

Earth's atmosphere

b)

Rocks

c)

Water

d)

Soil

19.

Which of the following are some of the major carbon stores on Earth? Select ALL that apply!

a)

The ocean

b)

The lithosphere (upper part of Earth's crust)

c)

The atmosphere

20.

The step of the nitrogen cycle that is in red is called...

a)

Denitrification

b)

Nitrification

c)

Nitrogen Fixation

d)

Ammonification

21.

The step of the nitrogen cycle that is in red is called...

a)

Denitrification

b)

Nitrification

c)

Nitrogen Fixation

d)

Ammonification

22.

The step of the nitrogen cycle that is in red is called...

a)

Denitrification

b)

Nitrification

c)

Nitrogen Fixation

d)

Ammonification

23.

Nitrogen fixation...

a)

animals eat the plants and other animals that contain nitrogen and release it through their waste

b)

Bacteria in the soil and lightning in the atmosphere “fix” the nitrogen

c)

Once in the ground, bacteria in the soil also nitrify the nitrogen

d)

plants absorb nitrogen through their roots and return it back to the atmosphere

24.

Denitrification...

a)

animals eat the plants and other animals that contain nitrogen and release it through their waste

b)

Bacteria in the soil and lightning in the atmosphere “fix” the nitrogen

c)

nitrogen is released back into the atmosphere from the animal’s waste or decomposers

d)

plants absorb nitrogen through their roots and return it back to the atmosphere

25.

Organisms need nitrogen in order to...

a)

To breathe

b)

To obtain water for growth

c)

To build proteins & DNA

d)

To regulate temperature

26.

Which of these nitrogen cycle processes converts atmospheric nitrogen to a soil form of nitrogen that is usable by plants?

a)

nitrogen fixation

b)

nitrification

c)

denitrification

d)

ammonification

27.

Bacteria fix nitrogen from the atmosphere into a form plants can use.

a)

True

b)

False

28.
How nitrogen is "fixed" into useable form for plants...
a)
through action of bacteria only
b)
through lightning only
c)
through action of bacteria & lightning
d)
through photosynthesis
29.

How do animals get the nitrogen they need?

a)

From the air they breathe

b)

From the water they drink

c)

From the food they eat

d)

From the sun

30.

Which of the following is an disadvantage of asexual reproduction?

a)

lacks variation

b)

quick

c)

many offspring with little energy

31.

Involves only one parent

a)

Asexual Reproduction

b)

Sexual Reproduction

c)

Diverse

d)

Uniform

32.

Which is NOT a Sexual reproduction DISADVANTAGE

a)

High genetic variation

b)

Can be complicated

c)

smaller population

d)

requires courtship or mating

33.

Which is NOT an Asexual reproduction DISADVANTAGE

a)

No genetic variation

b)

Only need one parent

c)

Bad characteristics are passed on

d)

difficult for organisms to adapt

34.

What is the difference between sexual and asexual reproduction?

a)

Asexual produces genetically different offspring. Sexual produces genetically identical.

b)

Sexual produces offspring with fewer chromosomes. Asexual produces more.

c)

Sexual produces genetically different offspring. Asexual produces genetically identical.

d)

Sexual reproduction is quicker than asexual.

35.

Evolution is the result of a process called ____________

a)

Natural Selection

b)

Artificial Selection

c)

Survival of the Weakest

d)

Supernatural Selection

36.

According to natural selection, organisms more suited to their environment are better able to

a)

Sleep

b)

Survive

c)

Perish

d)

Migrate

37.

Natural selection happens when an individual's genes ______________ from the genes of other members of its species.

a)

Become different

b)

Stay the same

c)

Become separated

38.

Changes in genetic material are called _____________

a)

Mutations

b)

RNA

c)

Genes

39.

Some changes in genes can help organisms _____

a)

Survive

b)

Mutate

c)

Rest

40.

1. The process of choosing parent organisms for desired characteristics is called

a)

natural selection

b)

Artificial selection

c)

random selection

d)

genetic manipulation

41.

What is an example of artificial selection?

a)

Letting dogs choose their own mate

b)

Letting plants pollinate on their own

c)

Crossing a labrador and a poodle to create a labradoodle

42.

Which statement is true comparing natural selection and artificial selection?

a)

In natural selection, traits benefit humans and in artificial selection, the traits benefit the species

b)

In natural selection, traits benefit the species and in artificial selection, the traits benefit humans

c)

In natural and artificial selection, the process takes hundreds of years to occur

d)

In natural and artificial selection, nature determines what traits will be passed down to offspring.

43.

Which leaf is shown in the drawing?

a)

Magnolia

b)

Redbud

c)

Sweetgum

d)

None of the above

44.

A student discovers an arachnid with a segmented abdomen, long legs, and a tail with no stinger.

The student uses the dichotomous key below to identify it.

1. a) Abdomen segmented.............go to 2

b) Abdomen not segmented ......go to 4

2. a) Abdomen with tail....................go to 3

b) Abdomen without tail...............go to 5

3. a) Tail with stinger..........................Scorpion

b) Tail without stinger.....................Whip scorpion

4. a) Legs longer than body.............Daddy Long Legs

b) Legs not longer than body……….Wind scorpion

5. a) Covered with spines .......................Mite

b) Few spines.....................................Tick

a)

Whip Scorpion

b)

Daddy Long Legs

c)

Mite

d)

Tick

45.

Identify the plant shown

a)

A

b)

B

c)

C

d)

D

46.

How many options should every branch in a dichotomous key have?

a)

1

b)

2

c)

3

d)

4

47.

When using a dichotomous key to identify organisms, what do we look at?

a)

physical features

b)

weather patterns

c)

environment

d)

diet

48.
An illustration and a dichotomous key are given. What is the correct classification for this organism?
a)
Class Insecta
b)
Order Amblygygi
c)
Order Araneae
d)
Order Scorpiones
49.
Using this dichotomous key, identity the name of the circled fish.
a)
band-tail puffer
b)
spotted goat fish
c)
peacock flounder
d)
trumpet fish
50.

All cells in the Eukarya domain will have a __________.

a)

Nucleus

b)

Cytoplasm

c)

Cell Wall

d)

Flagella

51.
Which of the following determines if an organism is eukaryotic?
a)
having identical offspring
b)
producing their own food
c)
having a nucleus
d)
number of cells
52.
An organism that must consume or eat other organisms to get its nutrients is known as a(n) _____.
a)
prokaryote
b)
eukaryote
c)
heterotroph
d)
autotroph
53.

The study of naming and classifying organisms


(a)  
Choose from the below words
Taxonomy
Classification
Dichotomous Key
Cladogram
54.
a)

F

b)

G

c)

H

d)

J

55.
a)

A

b)

B

c)

C

d)

D

56.

According to this phylogenetic tree, which creature is the least related out of all pictured?

a)

Fish

b)

Frog

c)

Salamander

d)

Human

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