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Science 7 Unit a review

Total questions: 75

Worksheet time: 56mins

Name
Class
Date
1.

A non-living part of an ecosystem

a)

biotic factor

b)

abiotic factor

c)

terrestrial

d)

producer

2.

Of or relating to land instead of water or air.

a)

biotic factor

b)

abiotic factor

c)

terrestrial

d)

producer

3.

An organism, such as a plant that makes its own food.

a)

biotic factor

b)

abiotic factor

c)

terrestrial

d)

producer

4.

Growing or living in water

a)

food chain

b)

decomposer

c)

consumer

d)

aquatic

5.

the path that energy takes from one organism to another in the form of food.

a)

food chain

b)

decomposer

c)

consumer

d)

aquatic

6.

an organism that breaks down wastes and the remains of other organisms into simpler substances

a)

food chain

b)

decomposer

c)

consumer

d)

aquatic

7.

the food chains that overlap in an ecosystem

a)

food chain

b)

decomposer

c)

food web

d)

aquatic

8.

A consumer that eats meat only

a)

carnivore

b)

decomposer

c)

omnivore

d)

herbivore

9.

All energy in all ecosystems on earth first comes from

a)

the sun

b)

plants

c)

water

d)

animals

10.
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
11.
In this Food Web Pyramid what is the proper name for the organisms above the producer level at the bottom.
a)
herbivores
b)
consumers
c)
carnivores 
d)
omnivores
12.

Using food web which of the following is a secondary consumer?

a)

snake

b)

worm

c)

butterfy

d)

squirrel

13.

A wasp lays its eggs on a caterpillar's body. The larvae that hatch from the eggs start feeding on the tissue of the caterpillar. What type of ecological relationship do both the organisms share?

a)

parasitism

b)

competition

c)

mutualism

d)

cooperation

14.
Which of the following eats producers?
a)
 Carnivore
b)
Herbivore
c)
Bacteria
d)
Fungi
15.
Plants and algae are the first organisms in most food chains because both plants and algae are ______________.
a)
Consumers
b)
Producers
c)
 Scavengers
d)
Decomposers
16.
What do a snake, a hawk, and a fox have in common?
a)
They all produce their own food.
b)
They all get most of their energy from eating animals.
c)
They all get most of their energy from eating plants.
d)
They are all decomposers.
17.
Which organism in the food chain below is a producer?
a)
Grass
b)
Mouse
c)
Snake
d)
Hawk 
18.
Which of the following is an herbivore?
a)
Lion 
b)
Tyrannosaurus
c)
Wolves
d)
Elephant
19.
Hawks, grasses, songbirds, and caterpillars are some organisms found in an ecosystem. Which is the correct order for energy transfer in this ecosystem?
a)
caterpillars → hawks → grasses → songbirds
b)
grasses → caterpillars → songbirds → hawks
c)
hawks → caterpillars → grasses → songbirds
d)
songbirds → grasses → hawks → caterpillars
20.
Which of the statements is true?
a)
Energy transfers from sparrows to grasshoppers.
b)
Energy transfers from eagles to snakes.
c)
Energy transfers from grasshoppers to mice.
d)
Energy transfers from snakes to mice.
21.

A symbiotic relationship in which both species benefit is

a)

mutualism.

b)

commensalism.

c)

predation.

d)

parasitism.

22.

An organism's niche is

a)

a full description of the place an organism lives.

b)

all the physical and biological factors in the organism's environment.

c)

the range of temperatures that the organism needs to survive.

d)

the range of physical and biological conditions in which an organism lives and the way it obtains what it needs to survive and reproduce.

23.

The land and water ecosystems that provide the resources that a person uses and that neutralize that person's wastes is part of that person's

a)

biodiversity.

b)

habitat.

c)

ecological sustainability.

d)

ecological footprint.

24.

The goals of biodiversity conservation include all of the following EXCEPT

a)

protecting individual species.

b)

preserving habitats and ecosystems.

c)

making sure local people benefit from conservation efforts.

d)

introducing exotic species into new environments.

25.

As DDT moves up the trophic levels in food chains or food webs its concentration

a)

increases.

b)

stays the same.

c)

decreases.

d)

is eliminated.

26.

Which of the following is NOT a symbiotic relationship?

a)

Competition

b)

Commensalism

c)

Mutualism

d)

Parasitism

27.

In which type of interaction does one animal eat another for energy and nutrients?

a)

Competition

b)

Parasitism

c)

Predation

d)

Mutualism

28.

In which symbiotic relationship are both organisms able to benefit from each other?

a)

Competition

b)

Commensalism

c)

Mutualism

d)

Parasitism

29.

Fleas living within a mammal's fur describes this type of relationship:

a)

Competition

b)

Mutualism

c)

Predation

d)

Parasitism

30.

Orchid vines are skinny and grow on the trunk of trees to get more light and space with no negative effect.

a)

Mutualism

b)

Commensalism

c)

Parasitism

d)

Competition

31.

When the population of predators gets too high...

a)

Prey pop. will increase--> predator pop. will increase

b)

Prey pop. will decrease--> predator pop. will increase

c)

Prey pop. will decrease--> predator pop. will decrease

d)

It depends on the biome

32.
A pioneer species is...
a)
a large organism
b)
the first organisms to adapt to a new environment 
c)
The best organism 
d)
Abiotic organisms 
33.
A climax community is ….
a)
the beginning of a new ecological succession.
b)
the rocks in a new environment.
c)
the fire that will cause destruction.
d)
an area that reaches its greatest growing potential.
34.
What is the difference between primary and secondary succession?
a)
Primary succession already has soil.
b)
Primary has soil and secondary does not
c)
soil is present in both
d)
primary has no soil and secondary has soil
35.

Which of the following is a biotic factor?

a)

flower

b)

water

c)

sunlight

d)

oxygen

36.

Which of the following is an abiotic factor?

a)

deer

b)

tree

c)

carbon dioxide

d)

grass

37.

Which of the following is a species?

a)

a school of fish

b)

an anthill

c)

a pond

d)

a moose

38.

Which of the following is a population?

a)

a whale

b)

a flock of birds

c)

a forest

d)

a coral reef

39.

Which of the following is a community?

a)

a lake

b)

a mosquito

c)

a herd of deer

d)

a pack of wolves

40.

Which of the following is NOT a basic need for survival?

a)

oxygen

b)

energy

c)

entertainment

d)

water

41.

What is the name of an interaction where BOTH organisms BENEFIT?

a)

mutualism

b)

commensalism

c)

parasitism

d)

symbiosis

42.

What is the name of an interaction where ONE organism benefits and the OTHER is unaffected?

a)

mutualism

b)

commensalism

c)

parasitism

d)

symbiosis

43.

What is the name of an interaction where ONE organism BENEFITS and the OTHER is HARMED?

a)

mutualism

b)

commensalism

c)

parasitism

d)

symbiosis

44.

Runoff from fertilizer on a farm accumulates in a lake . . . is this Human Activity or Nature changing an ecosystem?

a)

Human Activty

b)

Nature

45.

What process do plants use to create their own food?

a)

cellular respiration

b)

photosynthesis

c)

production

d)

sunlight

46.

What is the name of the process animals use to create energy?

a)

cellular respiration

b)

photosynthesis

c)

production

d)

breathing

47.

What is the name of a producer that breaks down dead matter?

a)

scavenger

b)

primary producer

c)

decomposer

d)

carnivour

48.

What is the name of a consumer that eats only meat?

a)

primary producer

b)

omnivore

c)

carnivore

d)

herbivore

49.

What is the name of a consumer that eats plants and animals?

a)

decomposer

b)

omnivore

c)

herbivore

d)

carnivore

50.

What is the name of a consumer that only eats plants?

a)

producer

b)

omnivore

c)

herbivore

d)

carnivore

51.

Which of the following is NOT a part of the water cycle terminology we learnt?

a)

photosynthesis

b)

evaporation

c)

condensation

d)

precipitation

52.

Which of the following is NOT part of the carbon cycle?

a)

photosynthesis

b)

cellular respiration

c)

decomposition

d)

evaporation

53.

What is the number one cause of changes in the distrubution of living things?

a)

sunlight enery

b)

photosynthesis

c)

human interaction

d)

animal interaction

54.
When two or more species compete for the same resources, it is called ...
a)
predation
b)
bioinvasion
c)
competition
d)
succession
55.
Different species
 compete for ...
a)
space to live
b)
affection
c)
pollution
d)
predators
56.
What is the correct order from first (happened first) to last (happened last) in this pond succession?
a)
A, B, C, D
b)
D, C, B, A
c)
B, A, D, C
d)
C, D, A, B
57.
Succession that occurs after a fire in an ecosystem is called ...
a)
primary succession
b)
flame succession
c)
secondary succession
d)
 climax succession
58.
The following natural events will cause primary succession to occur:
a)
floods and tsunamis
b)
wildfires 
c)
hurricanes and tornadoes
d)
volcanoes and lava
59.
Peregrine falcons were once endangered because...
a)
DDT made their eggshells weak
b)
DDT poisoned the young birds
c)
farming destroyed their habitats
d)
of overhunting
60.
When humans realized that too much wildlife was being killed by cars in Banff NP, they...
a)
stopped cars from entering
b)
slowed down the cars
c)
built tunnels for the wildlife
d)
built overpasses for the wildlife
61.
The amount of land needed by each person to live is called the ...
a)
habitat footprint
b)
Wackernagel footprint
c)
ecological footprint
d)
food footprint
62.
The ecological footprint for Canadians is...
a)
7.7 hectares
b)
5.5 hectares
c)
2.2 hectares
d)
1.7 hectares
63.
The ecological footprint average for each person worldwide is ...
a)
7.7 ha
b)
5.5 ha
c)
2.2 ha
d)
1.7 ha
64.
The ecological footprint that we should have is ...
a)
7.7 ha
b)
5.5 ha
c)
2.2 ha
d)
1.7 ha
65.
The ecological footprint is NOT determined by the amount of ...
a)
food
b)
housing
c)
transportation
d)
education
66.
A species that comes from another area or country, and takes over a habitat is called a ...
a)
predator
b)
bioinvader
c)
competitor
d)
prey
67.
The final stable community that is made up of many different plants and animals is called:
a)
pioneer community
b)
farmland
c)
climax community
d)
old field
68.
The picture shows what type of succession?
a)
primary
b)
secondary
c)
tertiary
d)
quadanary
69.
When a species has lived in an area for hundreds of years, and did not come from another country or area, it is called...
a)
homeland
b)
bio
c)
transplanted
d)
native
70.
This graph is an example of ...
a)
weather
b)
predation
c)
bioinvasion
d)
competition
71.
When the prey population decreases, the predator population ...
a)
increases
b)
decreases
c)
stays the same
d)
cycles
72.
When people sprayed DDT in the rain forest in Borneo, the intended consequence was...
a)
to have people's roofs eaten by caterpillars
b)
to get rid of malaria
73.
A species that is almost extinct is called ...
a)
populated
b)
threatened
c)
endangered
d)
invaded
74.

the increase in concentration of pollutants as you move up the food chain

a)

climate change

b)

bioinvasion

c)

overfishing

d)

biomagnification

75.

a plant, animal or fungus that gets introduced to a new area and has a tendency to spread and cause damage to an area’s ecosystem

a)

invasive species

b)

biomagnification

c)

nutrient pollution

d)

overfishing

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