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Dynamic & Resilient Ecosystems

Total questions: 48

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this?

a)

Mutualism

b)

Commensalism

c)

Parasitism

d)

Amensalism

2.

In the sea, little fish called pilot fish swim closely to sharks. The pilot fish clean the sharks, and the sharks provide protection for the pilot fish. What type of symbiosis is this?

a)

Mutualism

b)

Commensalism

c)

Parasitism

d)

Amensalism

3.

In an ecosystem, there are populations of deer, rabbits, grass, and pine trees. Suddenly, a fire blazes through the area, which kills all of the populations. As the months go on, new species of grass begin to take root. This attracts animals, and eventually the ecosystem is restored.


What type of ecological succession happened?

a)

Primary succession because it started with rocks.

b)

Primary succession because there was soil to begin with, and plants existed before the disaster.

c)

Secondary succession because it started with rocks.

d)

Secondary succession because there was soil to begin with, and plants existed before the disaster.

4.

In Hawaii, there are volcanoes. Before anything was there, the volcanoes erupted which produced volcanic rock. Lichens were the first species to arrive, and they broke down the rock into soil. Eventually, plants began to grow. Now, the islands are functioning at their climax community.

Is this an example of primary or secondary succession?

a)

Primary succession

b)

Secondary succession

5.

In Hawaii, there are volcanoes. Before anything was there, the volcanoes erupted which produced volcanic rock. Lichens were the first species to arrive, and they broke down the rock into soil. Eventually, plants began to grow. Now, the islands are functioning at their climax community.

What is the pioneer species in this example?

a)

Shrubs

b)

Lichens

c)

Trees

d)

Rock

6.

What is this picture describing?

a)

It is describing direct competition between flamingos and ducks.

b)

It is describing natural selection as it follows the disruptive selection pattern.

c)

It is describing the niche of each bird within the tree.

d)

It is describing abiotic factors of the tundra.

7.

What term describes the ability of an organism or ecosystem to adapt after a disturbance?

a)

Tolerance

b)

Resilience

c)

Biodiversity

d)

Niche

8.

The ability to recover from or adjust from or adjust easily to misfortune or change.

a)

Catastrophic

b)

Disruptive

c)

Resilient

d)

Population

9.

A group of animals, plants or other living things that all share common characteristics and that are all classified as alike in some manner.

a)

Population

b)

Species

c)

Ecosystem

d)

Prevalent

10.

A system that includes all living organisms (biotic factors) in an area as well as its physical environment (abiotic factors or nonliving things) functioning together as a unit.

a)

Population

b)

Catastrophic

c)

Species

d)

Ecosystem

11.

The nonliving parts of an ecosystem.

a)

Biotic

b)

Photosynthesis

c)

Abiotic

d)

Variable

12.

The living things in an ecosystem.

a)

Abiotic

b)

Variable

c)

Control

d)

Biotic

13.

Organisms, like bacteria, insects and worms, that break down waste are called ___

a)

carnivores

b)

herbivores

c)

decomposers

14.

Energy flows through a system of living things in a "what eats what" model called ___

a)

the carbon cycle

b)

a food chain

c)

an energy line

15.

Where do decomposers fit in a food chain?

a)

at the beginning

b)

at the end

c)

any time there's waste

16.

Decomposers break waste down into ___

a)

bacteria and some fungi

b)

nutrients and other chemicals

17.

Which organisms keep waste from piling up in an ecosystem?

a)

decomposers

b)

plants

c)

mice

18.

A habitat is home to a tangle of food chains called ___

a)

a nutrient hub

b)

an energy chain

c)

a food web

19.

The interaction of living and non-living things in a habitat is called ___

a)

a food chain

b)

an ecosystem

c)

a food web

20.

A food chain is a model that shows how energy flows between _____

a)

plants and bugs

b)

living things

c)

bears and monsters

21.

What is the scientific name for the area in which plants and animals live?

a)

a habitat

b)

an ecosystem

c)

a food chain

22.

All of the energy that's in a food chain starts with _____

a)

decomposers

b)

animals

c)

the sun

23.

Food, water, shelter, and space to live are all part of a ___

a)

food chain

b)

habitat

c)

Crash Course video

24.

A community consists of all the organisms in an ecosystem that belong to the same species.

a)

True

b)

False

25.

What is the difference between a population and a community?

a)

A population is made up of all species in an area. A community is made up only of one species.

b)

A population is made up of only one species. A community is made up of all species in an area.

c)

A population is made up of all the species and nonliving things in an area. A community is made up of all species in an area.

d)

The words mean the same thing.

26.

If there are no limiting factors, a population can reach its _____.

a)

competition level

b)

population potential

c)

population density

d)

biotic potential

27.

Mutualism is any close relationship between different species.

a)

True

b)

False

28.

A symbiotic relationship that benefits both species is referred to as commensalism.

a)

True

b)

False

29.

What is the difference between a community and an ecosystem?

a)

An ecosystem consists of living and nonliving things in an area. A community is all the members of one species in the area.

b)

An ecosystem consists of living and nonliving things in an area. A community is all the populations in the area.

c)

An ecosystem consists of nonliving things in an area. A community is all the living things in the area.

d)

An ecosystem consists of all the populations in an area. A community is all the nonliving things in the area.

30.

Which of these is a limiting factor?

a)

food supply

b)

shelter

c)

existence of predators

d)

all of these

31.

In a predator-prey relationship, _____.

a)

the predator hunts the prey for food

b)

the prey hunts the predator for food

c)

the prey keeps the predator population from growing too large

d)

the prey are producers

32.

Succession continues until it reaches a pine forest community.

a)

True

b)

False

33.

Mutualism is any close relationship between different species.

a)

True

b)

False

34.

Samantha plants some flowers in a flower bed and then ignores them. Soon weeds grow and the flowers die. The weeds had been able to get enough resources to survive, while the flowers had not. This is an example of _____.

a)

competition

b)

population size

c)

habitat

d)

community

35.

Some populations have cooperative relationships. This is where _____.

a)

members of the same species compete for resources

b)

members of different species compete for resources

c)

members of the same species work together for survival

d)

members of different species work together for survival

36.
Which of the following is an example of an interaction between a living and nonliving organism?
a)
a snake using a mouse for food
b)
a worm using the soil as shelter
c)
a bird using an insect for food
37.
Is fire a natural event that causes a change in the environment?
a)
Yes
b)
No
38.
Is a hurricane a natural event that causes a change in the environment?
a)
yes 
b)
no
39.
Are floods a natural event that causes a change in the environment?
a)
yes
b)
no
40.
What would the insect be considered?
a)
Producer
b)
Consumer
c)
Fungus
41.
The parts of the food chain in the picture are out of order.  Which picture should be third in the food chain shown?
a)
snake
b)
sun
c)
carrot
d)
rabbit
42.

What is an ecosystem?

a)

The area of land where animals live

b)

A community of insects that work together

c)

A community of organisms together with its environment

d)

The section of a terrarium where plants grow

43.

Only living things are made of matter

a)

True

b)

False

44.

Plants make their own food

a)

True

b)

False

45.
A group of the same type of organisms living in the same place at the same time.
a)
threatened species
b)
populations
c)
community
d)
limiting factor
46.
Something that limits the size  of a population.
a)
maxfactor
b)
factor tree
c)
the x factor
d)
limiting factor
47.
Which is a biotic factor?
a)
sunlight
b)
air 
c)
bacteria
d)
all of the above
48.
Ecosystems are always______.
a)
always changing
b)
always balanced
c)
never changing
d)
never balanced