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Unit 2 Review

Total questions: 21

Worksheet time: 18mins

Name
Class
Date
1.

The ecological role an organism performs in their specific environment is considered the organism's...

a)

Habitat

b)

Population

c)

Biome

d)

Niche

2.

"Organisms that have moved to a location that does not naturally support them."

a)

Invasive species

b)

Destructive species

c)

Unwelcomed species

d)

Infected species

3.

The differentiation of niches and resources that enables similar species to coexist in a community

a)

character displacement

b)

climax community

c)

resource partitioning

d)

pioneer species

4.
What effect does biodiversity have on a community?
a)
It makes destruction by insects impossible. 
b)
It makes primary succession more likely.   
c)
 It enables species to survive in a desert.
d)
It enables the community to withstand changes.
5.
The ecological niches of three bird species are shown in the diagram. What is the advantage of each bird species having a different niche?
a)
As more birds feed higher in the tree, available energy increases.
b)
More abiotic resources are available for each bird.
c)
Predators are less likely to feed on birds in a variety of locations.
d)
There is less competition for food.
6.

Succession that begins in an area that previously did not support life

a)

Ecological succession

b)

Primary succession

c)

Secondary succession

d)

Character displacement

7.

The process by which one community replaces another community that has been partially or totally destroyed

a)

Primary succession

b)

Ecological succession

c)

Secondary succession

d)

Resource partitioning

8.

A species that colonizes an uninhabited area and that starts an ecological cycle in which many other species become established

a)

Climax community

b)

Species-area effect

c)

Character displacement

d)

Pioneer species

9.

A community that, after a process of ecological succession, has reached a generally stable state

a)

Climax community

b)

Pioneer species

c)

Resource partitioning

d)

Character displacement

10.

Which of the following is NOT an example of primary succession?

a)

Volcanic islands rising from sea

b)

Hurricanes hitting coastal areas

c)

Strip mined quarries

d)

Volcanic eruptions

11.

Which type of succession takes LONGER than the other?

a)

Primary

b)

Secondary

12.

Which of the following is NOT an example of secondary succession?

a)

Wild fires

b)

Flooding

c)

Volcanic eruptions

d)

Mudslides

13.

A Kudzu vine is transported to the US and outcompetes all of the American grapevines by blocking out their sunlight. Which of the following is considered the invasive species?

a)

Kudzu vine

b)

American grapevines

14.

Which of the following is a characteristic of a non-native species?

a)

aggressive

b)

feeds native organisms

c)

poisonous

d)

outcompetes native species

15.
Cattle egrets forage (feed) in fields among cattle. The egret gets easy access to flying insects stirred up by the cattle, and the cattle don't care if they are there or not.
a)
mutualism
b)
commensalism
c)
competition
d)
parasitism
16.
What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
17.

Aphids are tiny insects that live on and eat the leaves of plants, removing vital nutrients from the plants.

a)

Predation

b)

Parasitism

c)

Commensalism

d)

Mutualism

18.

One organism hunts and eats another organism.

a)

predation

b)

mutualism

c)

carnivore

d)

parasitism

19.

This occurs when niches overlap between species and they have to compete for resources.

a)

competition

b)

interspecific

c)

parasite

d)

intraspecies

20.

The type of pioneer species that breaks down rock during primary succession and slowly turns it to soil.

a)

moss

b)

algae

c)

lichen

d)

grass

21.

Removal of which species would be most devestating to the ecosystem?

a)

Blue whale

b)

Plankton

c)

Penguin

d)

Seagull