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Unit 8 Intro: Ecology & Population Dynamics

Total questions: 25

Worksheet time: 27mins

Name
Class
Date
1.

The study of the interactions between organisms and their environment

a)

Biology

b)

Ecology

c)

Sociology

d)

Geology

2.

All the organisms of the same species living in the same area or community

a)

Community

b)

Population

c)

Habitat

d)

Ecosystem

3.

All living things in a given area, living and non-living.

a)

Ecosystem

b)

Biotic

c)

Community

d)

Species

4.

A group of very similar organisms that can mate and reproduce offspring of the same type

a)

Community

b)

Population

c)

Species

d)

Niche

5.

A population of different species that exist in an ecosystem

a)

Habitat

b)

Community

c)

Population

d)

Ecosystem

6.

The non-living parts of the environment such as rocks, air, temperature, sunlight, and water

a)

Abiotic

b)

Biotic

c)

Habitat

d)

Community

7.

The living or once living organisms in an ecosystem

a)

Biology

b)

Abiotic

c)

Biotic

d)

Ecology

8.
Which of the following describes the importance of biodiversity to an ecosystem?
a)
a. People like to be able to see all the different plants and animals
b)
b. If there aren�t all the different species, there will be resources that aren�t being used
c)
c. Biodiversity is not as important as many people think
d)
d. Biodiversity can help minimize the effects of losing a species.
9.

In the food web shown, who is the secondary consumer?

a)

grass

b)

mouse

c)

rabbit

d)

fox

10.

What does a primary consumer eat?

a)

tertiary consumers

b)

secondary consumers

c)

producers

d)

decomposers

11.
An organism that lives by breaking apart dead organic matter into simpler parts is...
a)
scavenger
b)
consumer
c)
decomposer
d)
carnivore
12.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a ecosystem.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms. 
d)
How carnivores get their food. 
13.

Why might an organism have more than one arrow coming from them in a food web?

a)

More than one organism may eat them.

b)

They may eat more than one other organism.

c)

This organism gets its energy from multiple sources.

14.
What is this called?
a)
Food Web
b)
Food Chain
c)
Abiotic Factors
15.

An organism that can produce its own food through photosynthesis or chemosynthesis.

a)

consumer

b)

heterotroph

c)

autotroph

d)

herbivore

16.
What type of relationship is shown here
a)
Commensalism
b)
Predation
c)
Parasitism
d)
Mutualism 
17.
A relationship between two organisms in which one organism benefits and the other is unharmed
a)
Mutualism 
b)
Competition
c)
Parasitsm 
d)
Commensalism 
18.
A cuckoo may lay its eggs in a warbler's nest.  The cuckoo's young will displace (or move) the warbler's young and will be raised by the warbler.  
a)
Parasitism
b)
Commensalism
c)
Predation
d)
Competition
19.
Most animals have ________ for food, water, and living space.
a)
competition
b)
fun
c)
predation
d)
commensalism
20.

The maximum number of individual organisms that an ecosystem can comfortably support is

a)

exponential growth

b)

carrying capacity

c)

population

d)

tolerance

21.

J curve - as population gets larger, it also grows faster. This occurs because there are more individuals reproducing as the population grows and is known as

a)

exponential growth

b)

logistic growth

c)

stable growth

d)

birth rate

22.

population grows quickly, then levels off

a)

Exponential Growth

b)

Logistical Growth

c)

Immigration

d)

Emigration

23.

Both graphs represent different population growth models. In graph 1, there are no external factors acting on a population, What is the MOST likely factor causing the change in graph 2.

a)

maximum rate of a population

b)

elimination of genetic diversity

c)

the limitation of an available resource

24.

The specialized term for a consumer.

a)

Eater

b)

Autotroph

c)

Heterotroph

d)

Consumer

25.

Where does all energy in an ecosystem begin?

a)

Plants

b)

The sun

c)

Herbivores

d)

Soil & Water

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