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Populations, Communities, and Ecosystems Test

Total questions: 25

Worksheet time: 23mins

Name
Class
Date
1.

What is ecology?

a)

the study of life

b)

the study of the interactions (connections) among living things, and between living things and their environment

c)

the study of fossils, embryos, homologous structures and how they are evidence of our evolution from a common ancestor

d)

the study of atoms, molecules, organelles and cells

2.

What is the initial (first or primary) source of energy in every ecosystem?

a)

plants

b)

higher level consumers

c)

the sun

d)

decomposers

3.

Introduced species disrupt ecosystems because they are a/an

a)

Keystone Species

b)

Endemic Species

c)

Invasive Species

d)

Native Species

4.

The role of an organism in its environment.

a)

Competition

b)

Niche

c)

Invasive Species

d)

Job

5.

The struggle between two animals using the same limited resources

a)

Competition

b)

Symbiosis

c)

Mutualism

d)

Commensalism

6.

When one animal kills another for nutrients/food

a)

Symbiosis

b)

Niche

c)

Predation

d)

Interaction

7.

A relationship between two species living close together

a)

Symbiosis

b)

Mutualism

c)

Commensalism

d)

Parasitism

8.

A relationship where both species benefit

a)

Symbiosis

b)

Mutualism

c)

Commensalism

d)

Parasitism

9.

A relationship between two species where one benefits and the other is not helped or harmed

a)

Symbiosis

b)

Mutualism

c)

Commensalism

d)

Parasitism

10.

A relationship where one species benefits and the other species is harmed

a)

Symbiosis

b)

Mutualism

c)

Commensalism

d)

Parasitism

11.

When a honeybee pollinates flowers, the bee gets access to nectar, while the flowers gain the chance to reproduce. This is an example of:

a)

Amensalism

b)

Commensalism

c)

Parasitism

d)

Mutualism

12.

Remoras are fish that swim alongside sharks, eating scraps that the sharks leave behind. This is an example of:

a)

Amensalism

b)

Commensalism

c)

Parasitism

d)

Mutualism

13.
Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed. 
a)
parasitism
b)
commensalism
c)
mutualism
14.

The series of predictable changes that occur in a community over time

a)

Pioneer Species

b)

Succession

c)

Niche

d)

Colonize

15.

The first species to populate an area are called

a)

Keystone species

b)

Pioneer Species

c)

Secondary Species

d)

Primary Species

16.
Currently sharks are on a rapid decline due to overfishing. If sharks go extinct will this affect the biodiversity of the ocean?
a)
No, sharks are not important.
b)
No, sharks will only affect the seal populations.
c)
Yes, it will disrupt the entire food chain in the ocean.
d)
Yes, but only a little.
17.

A species that influences the survival of many other species in an area

a)

Pioneer Species

b)

Keystone Species

c)

Primary Species

d)

Secondary Species

18.
What term describes the variety of different organisms found in an ecosystem?
a)
population
b)
biodiversity
c)
ecosystem services
19.
What term describes the positive benefits that wildlife or ecosystems provides to people?
a)
ecosystem services
b)
ecosystem
c)
biodiversity
20.
The most effective way to protect biodiversity is through...
a)
habitat fragmentation
b)
habitat destruction
c)
habitat preservation
21.

A healthy forest ecosystem in the Northwest is home to elk, mule deer, chipmunks, ground squirrels, and a variety of plants. What is the relationship between biodiversity and available resources?

a)

Biodiversity is not affected by changes to available resources.

b)

Biodiversity decreases the amount of available resources.

c)

Biodiversity increases with abundant resources and decreases when resources are scarce.

d)

Biodiversity decreases with abundant resources and increases when resources are scarce.

22.
What are the four categories of ecosystem services?
a)
Provisioning, regulating, supporting, and physical
b)
Provisioning, regulating, supporting, and spiritual
c)
Provisioning, regulating, supporting, and emotional
d)
Provisioning, regulating, supporting, and cultural
23.
Why is preserving ecosystem services crucial for human survival and well-being?
a)
Because they are necessary for economic growth
b)
Because they are aesthetically pleasing and provide recreational opportunities
c)
Because they are important for scientific research
d)
Because they provide essential resources and benefits such as food, water, and climate regulation
24.

The disappearance of all members of a species from Earth

a)

Biodiversity

b)

Keystone species

c)

Extinction

d)

Invasive species

25.

The number and variety of different species in an area

a)

Biodiversity

b)

Keystone species

c)

Extinction

d)

Invasive species