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Unit 7 Populations and Communities

Total questions: 30

Worksheet time: 15mins

Name
Class
Date
1.

_____________ is the study of how organisms interact with each other and with their environment .

a)

Biology

b)

Chemistry

c)

Ecology

d)

Ornithology

2.

An organism's habitat must provide all of the following EXCEPT

a)

Food

b)

Water

c)

Predators

d)

Shelter

3.

The nonliving parts of an ecosystem are called

a)

Abiotic factors

b)

organisms

c)

Biotic factors

d)

Populations

4.

A group of organisms that can mate and produce offspring that can also mate and reproduce are a(n)

a)

Population

b)

Community

c)

Ecosystem

d)

Species

5.

An environment that provides an organisms food, water, and shelter is called the organisms __________.

a)

Habitat

b)

Niche

c)

Carrying Capacity

d)

Adaptation

6.

All the biotic and abiotic factors in an area together make up a(n)_________.

a)

Population

b)

Species

c)

Ecosystem

d)

Ecology

7.

Nutrients in the soil from decaying remains of dead animals is/are ___________ factor of an organism's habitat.

a)

Biotic

b)

Abiotic

c)

Symbiosis

d)

Population Density

8.

Bees and flowers are abiotic factors in an ecosystem.

a)

True

b)

False

9.

All the Prairie Dogs living in a Prairie Dog town, make up a(n)__________

a)

Habitat

b)

Community

c)

Population

d)

Ecosystem

10.

All the Prairie Dogs, Coyote's, Deer, Snakes, Mice, Insects in an area,  make up a(n)________

a)

habitat

b)

Community

c)

Population

d)

Ecosystem

11.

A group of antelope leaving the herd in search of better grassland is an example of________

a)

Immagtation

b)

Emigration

c)

Carrying Capacity

d)

Population Density

12.

If you count 20 beetles in a garden measuring 5 square meters, the population density of the beetles is

a)

100 Beetles per square meter

b)

20 Beetles per square meter

c)

5 Beetles per square meter

d)

4 Beetles per square meter

13.

All of the following are examples of a limiting factor EXCEPT

a)

Food

b)

Oxygen

c)

Living space

d)

Niche

14.

The main way individuals leave a population is through

a)

Increase Birth rate

b)

Emigation

c)

Immigtation

d)

Death

15.

Population size generally increases if the BIRTH RATE is GREATER than DEATH RATE

a)

True

b)

False

16.

A lack of places to build nests is an example of _________as a limiting factor for a population of birds

a)

Weather Conditions

b)

Living space

c)

Food

d)

Water

17.

The largest population that an area can support is called its_________

a)

Carrying Capacity

b)

Population density

c)

Limiting Factor

d)

Niche

18.

The outcome(s) of a population exceeding their carrying capacity may include (Mark any that may apply)

a)

Immigration

b)

Emigration

c)

Adaptation

d)

Death

19.

Two ways to join a population are?

a)

Births and Immigration

b)

Deaths and Emigration

c)

Births and Emigration

d)

Deaths and Immigration

20.

Individuals who are well-suited for their environment tend to survive and produce more offspring, is best described as__________

a)

Adaptation

b)

Natural Selection

c)

Competition

d)

None of the above

21.

An organism's particular role in its habitat, or when an how it survives, is called its

a)

Abiotic

b)

Ecosystem

c)

Competition

d)

Niche

22.

An artic hare(rabbit) has fur that turns from gray to white in the winter which helps camouflage the hare in snow.  This is a(n) example of_________

a)

Adaptation

b)

Natural

Selection

c)

Commensalism

d)

Competition

23.

The struggle between organisms to survive as they attempt to use the same limited resources is called______

a)

Predation

b)

Natural Selection

c)

Competition

d)

Symbiosis

24.

In a predator, prey relationship, as the pray population goes up,

a)

The predator population goes down.

b)

The predator population stays the same.

c)

The predator population goes up.

d)

Both predator and pray populations will reach their carrying capacity.

25.

A relationship in which two species live closely together and at least one of the species benefits is called_____________

a)

Mutualism

b)

Symbiosis

c)

A Niche

d)

A Host

26.

An example of a parasite would be a flea or tick.

a)

True

b)

False

27.

The relationship between flowers and bees can be described as_________

a)

Parisitism

b)

commensalism

c)

Competition

d)

Mutualism

28.

A harmful relationship, where one organism lives in or on another organism (Host) is called_________

a)

Parasitism

b)

Commensalism

c)

Predator Prey

d)

Symbiosis

29.

All are types of symbiosis EXCEPT

a)

Parasitism

b)

Commensalism

c)

Mutualism

d)

Competition

30.

The relationship between Clown fish (Nemo) and sea anemone's would be considered ______________

a)

Commensalism

b)

Parasitism

c)

Mutualism

d)

Competition