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Ecology Unit one Part 1-3

Total questions: 46

Worksheet time: 34mins

Name
Class
Date
1.

What is an ecosystem?

a)

All living and nonliving things in an environment

b)

A collection of foxes, deer and mice

c)

A collection of trees

d)

All livings in an environment

2.

What type of relationship does the lichen represent here? A lichen is a combination of fungus and algae that lives on the sides of trees, rocks, and other materials. The fungus provides the algae with water and minerals and the algae uses the water and minerals to make food for both organisms.

a)

mutualism

b)

commensalism

c)

parasitism

d)

competeition

3.

What community interaction is described between organism A and organism B

a)

competition

b)

predation

c)

commensalism

d)

parasitism

4.

Barnacles feed by attaching themselves to a whale's belly or back, allowing the species to then eat microorganisms as the whale swims.The whale is unaffected in this process. what type of symbiotic relationship is this

a)

mutualism

b)

commensalism

c)

parasitism

d)

competition

5.

The relationship between a tick and a dog allows for the tick to benefit and also causes harm to the dog. This is an example of _______________

a)

mutualism

b)

commensalism

c)

parasitism

d)

competition

6.

Within a community there are a population of wolves, foxes and rabbits. Recently hunters(humans) have moved into the area and are after the fur of the rabbits. With the predator-prey relationships that already exist, what has the inclusion of hunters caused in this community?

a)

revolt by the wolves and foxes against the humans

b)

an increased competition for resources

c)

an less competition between the foxes and wolves

d)

A hunting pack between the humans and wolves

7.

The image shows two Hartebeest locking horns fighting for territory. Which of the following best describes this interaction?

a)

intraspecific competition

b)

Interspecific competition

c)

predation

d)

symbiosis

8.

In this particular habitat many different populations of plants are competing for space, rain fall and soil nutrients. this is a good example of which of the following

a)

intraspecific competition

b)

interspecific competition

c)

mutalism

d)

parasitism

9.

Review: The Harlequin toad lives in high elevations of the Costa Rica tropical Rain Forests. They are primary consumers feeding on fungi, plants and small insects. which part of this description describes the toad's habitat

a)

high elevations

b)

Costa Rica

c)

Tropical Rain Forest

d)

primary consumers

10.

Review: Is acid rain causing a decline of frog populations? based on the questions above, what would be the independent variable in the experiment?

a)

population of frogs exposed to acid rain

b)

population of frogs not exposed to acid rain

c)

the number of frogs in the population after being exposed to acid rain

d)

the number of frogs in the population after not exposed to acid rain

11.

What type of relationship does the lichen represent here? A lichen is a combination of fungus and algae that lives on the sides of trees, rocks, and other materials. The fungus provides the algae with water and minerals and the algae uses the water and minerals to make food for both organisms.

a)

mutualism

b)

commensalism

c)

parasitism

d)

competition

12.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
13.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
14.

What is this called?

a)

Food Web

b)

Food Chain

c)

Abiotic Factors

d)

Symbiotic Relationship

15.

What is this called?

a)

Food Web

b)

Food Chain

c)

Abiotic Factors

d)

Symbiotic Relationship

16.
All food chains begin with a ____________.
a)
primary consumer
b)
secondary consumer
c)
producers
d)
scavengers
17.
Which best describes what a food chain shows you?
a)
Energy flow through an ecosystem
b)
Food flowing through an ecosystem
c)
Consumers going into other consumers
d)
Who eats who
18.

Which groups describes only decomposers?

a)

spiders, fungi, grass

b)

ladybug, deer, duck

c)

worm, trees, sunflower

d)

fungi, bacteria, and worms

19.

An organism that makes its own food is called a(n):

a)

autotroph

b)

heterotroph

c)

omnivore

d)

herbivore

20.

An organism that must "eat" another organism for its food is called a(n):

a)

autotroph

b)

heterotroph

c)

producer

d)

phytoplankton

21.

Which two words mean the same thing?

a)

producer & heterotroph

b)

producer & autotroph

c)

producer & decomposer

22.

Which two words mean the same thing?

a)

consumer & heterotroph

b)

producer & heterotroph

c)

autotroph & heterotroph

23.
What are plants called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Scavengers
24.
What are animals called in a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Plants
25.
What are the organisms that break down dead stuff?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Organisms
26.
Where does the energy start in this food chain?
a)
Plant
b)
Sun
c)
Deer
d)
Wolf
27.
What is the role of a producer?
a)
Use sunlight to make food
b)
Gain energy from eating other organisms
c)
Keep other species from overpopulating
d)
Breaking down dead stuff 
28.
What is the role of decomposers in a food chain?
a)
Use sunlight to make food
b)
Eat other organisms to gain energy
c)
Make the food for the whole food chain
d)
Break down dead organisms and add nutrients to the soil
29.
Which type of consumer eats plants only?
a)
Herbivores
b)
Omnivores
c)
Carnivores
d)
Scavengers
30.
Which type of consumer eats meat and plants?
a)
Herbivores
b)
Carnivores
c)
Omnivores
d)
Plants
31.

Which is the correct food chain order?

a)

Producer, primary consumer, secondary consumer, tertiary consumer, quarternary consumer, top consumer

b)

Producer, apex consumer, primary consumer, secondary consumer, quarternary consumer, top consumer

c)

Apex consumer, primary consumer, secondary consumer, tertiary consumer, quarternary consumer, top consumer

d)

Producer, primary consumer, secondary consumer, quaternary consumer, tertiary consumer, top consumer

32.

What is a trophic level?

a)

the group of organisms within an ecosystem which occupy the same level in a food chain.

b)

the group of organisms within an ecosystem which occupy the different levels in a food chain.

c)

when two or more food chains are combined to make a food web

33.
How much energy is passed on to each trophic level in an energy pyramid?
a)
10%
b)
90%
c)
50%
d)
80%
34.
Which organisms have the most available energy in an energy pyramid?
a)
Producer
b)
Consumer
c)
Decomposer
d)
Scavenger
35.
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.
36.
An energy pyramid represents what?
a)
How much sunlight is available for the ecosystem to use. 
b)
How much energy a particular organism needs. 
c)
How much energy is needed to build a pyramid. 
d)
The amount of energy available to the next 'feeder' in a food web.
37.
Autotrophs make up the _______ level in all ecosystems.
a)
First
b)
Second
c)
Third
d)
Fourth
38.
What is the term for each step in the transfer of energy and matter within a biological community?
a)
Energy path
b)
Food web
c)
Trophic level
d)
Food pyramid
39.
Which symbiotic relationship is described by both organisms benefiting?
a)
Predation
b)
Mutualism
c)
Parasitism
d)
Commensalism 
40.
A relationship between two species in which one organism is harmed but not killed is called...
a)
Mutualism
b)
Commensalism
c)
Parasitism
d)
Predation
41.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
42.
The amount of energy that usually transfers from one trophic level to the next...
a)
10%
b)
20%
c)
80%
d)
90%
43.
Which of the following would be the definition of a detritivore?
a)
Animals that eat insects.
b)
Organisms that feed on rocks, recycling the nutrients back into the ground.
c)
Organisms that eat only pants
d)
Things that feed on dead organisms, recycling the nutrients back into the ground.
44.
Water temperature would be an example of ...
a)
A biotic factor
b)
An abiotic factor
45.
A collection of organisms that make up a community as well as all of the nonliving aspects of the environment.
a)
Population
b)
Community
c)
Habitat
d)
Ecosystem
46.

What abiotic factors determine where organisms live in a lake or pond?

a)

Dissolved oxygen and nitrate levels

b)

Temperature, light, and nutrient availability.

c)

Temperature only

d)

How fast the water is flowing

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