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Ecology A

Total questions: 45

Worksheet time: 2hrs 30mins

Name
Class
Date
1.
The diagram below shows the cycling of nutrients in an ecosystem.
The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Inorganic nutrients
2.
An organism that produces its own food supply from inorganic compounds is called a(an)
a)
heterotroph
b)
consumer
c)
detritivore
d)
autotroph
3.

What is an ecological model of the relationships that form a network of complex interactions among organisms in a community from producers to decomposers?

a)

food web

b)

an ecosystem

c)

food chain

d)

a population

4.
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
5.
symbiotic relationship in which both organisms benefit
a)
competition
b)
Mutualism
c)
nitrogen fixation
d)
energy pyramid
6.
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. 
7.
diagram that shows the energy available to each trophic level in an ecosystem; 10% is passed on to upper levels, the rest is lost as heat
a)
succession 
b)
cellular respiration
c)
energy pyramid
d)
biochemical cycle
8.
symbiotic relationship in which one organisms benefits and the other organism is not affected
a)
invasive (non-native) species
b)
mutualism 
c)
nitrogen fixation
d)
commensalism
9.
Study of interactions between organisms and their environment 
a)
niche
b)
community 
c)
ecology
d)
ecosystem
10.
Members of a species in a defined area
a)
Ecosystem
b)
community
c)
biodiversity
d)
population
11.
Where an organism lives
a)
habitat
b)
niche 
c)
heterotrogh
d)
biosphere
12.
Non-living factor that affects an ecosystem
a)
biotic factor
b)
abiotic factor
c)
food chain 
d)
biome
13.
Organisms that breaks down and absorbs nutrients from dead organisms 
a)
consumer
b)
trophic level
c)
decomposer
d)
species
14.
Consumer that eats plants
a)
heterotroph
b)
herbivore
c)
producer
d)
community
15.
All the organisms in a particular location, including their nonliving environment
a)
ecosystem
b)
carnivore
c)
niche
d)
population
16.
What may happen if the snowshoe hare was removed from the food web pictured?
a)
The insects in the habitat would increase.
b)
The shrew population would decrease due to being only hawk food source.
c)
The willow tree population would decrease.
d)
Foxes would dies due to no food source. 
17.
Nitrogen fixation processes nitrogen from which of the following sources?
a)
lightning
b)
fertilizers
c)
dead plants
d)
atmosphere
18.
Nitrogen makes up _____ percent of the atmosphere.
a)
66%
b)
78%
c)
90%
19.
In the food web shown, the snail would be considered...
a)
primary consumer
b)
secondary consumer
c)
tertiary consumer
d)
producer
20.

The difference between weather and climate is that climate is:

a)

The average, year-to-year conditions

b)

The day-to-day conditions

c)

Described in terms of months at a time

d)

B and C are both correct

21.

Barnacles are animals that cannot move. In order to get food, they attach to whales and catch any floating plankton in the water. The whale is neither helped nor harmed in the interaction. What type of symbiosis is this?

a)

Mutualism

b)

Commensalism

c)

Parasitism

d)

Neutralism

22.

In the wild, some alligators gets their teeth cleaned by birds. The birds gets their food from the alligators' teeth.

What type of symbiosis is this?

a)

Mutualism

b)

Commensalism

c)

Parasitism

d)

Neutralism

23.

In this photo, what is an abiotic factor?

a)

Deer

b)

Grass

c)

rain

24.

What is this picture describing?

a)

It is describing natural selection.

b)

It is describing direct competition between flamingos and ducks.

c)

It is describing abiotic factors of the tundra.

d)

It is describing the niche of each bird.

25.
A collection of organisms that belong to different populations but all live in the same area and interact with one another.
a)
Population
b)
Ecosystem
c)
Community
d)
Ecosphere
26.
Evaporation of water from the leaves of a plant gives of purified water to be evaporated.
a)
precipitation
b)
concentration
c)
transpiration
d)
evaporation
27.
A farmer plants two species of grass with similar nutrient needs on the same small plot of land.  What kind of interaction will most likely occur between the two species?
a)
parasitism
b)
competition
c)
commensalism
d)
mutualism
28.
78% of Earth's atmosphere is nitrogen gas. All living things need nitrogen as a part of DNA and RNA. Yet you and I, and other living things, cannot use the nitrogen in our atmosphere directly. One type of organism is responsible for "fixing" nitrogen or helping to put it in a form so other living things can use it. That organism is
a)
bacteria.
b)
fungi.
c)
plants.
d)
viruses.
29.
In a simple food chain, small fish eat algae; bigger fish eat the smaller fish; bears eat the bigger fish. 
Using the above scenario, which of these would have the largest amount of energy?
a)
algae
b)
bears
c)
big fish
d)
small fish
30.
All these organisms share the same
a)
Biome
b)
Population
c)
Community
d)
Habitat
31.
In the food chain below if the worm contains 6 calories of energy, how much energy is available to the turtle to grow, develop, and reproduce if it ingest 10 worms?
a)
0.06
b)
0.6
c)
6
d)
60
32.
An underground reservoir of water is known as ______
a)
An Estuary 
b)
An Aquifer
c)
Sublimation 
d)
Permafrost
33.
Organism that feeds on plant and animal remains and other dead matter
a)
Decomposer
b)
Detritovore
c)
Carnivore
34.
Role and organism plays in it's environment
a)
Abiotic Factor
b)
Biotic Factor
c)
Niche
35.
A fox kills and eats a rabbit.  What type of relationship is this?
a)
parasitism
b)
predation
c)
commensalism
36.
According to this food web, which of these organisms is a primary consumer AND secondary consumer?
a)
rabbit
b)
mouse
c)
bird
d)
grasshopper
37.
According to this food web, what do foxes eat?
a)
rabbits and owls
b)
carrots and mice
c)
grasshoppers and birds
d)
rabbits and birds
38.
The diagram represents a pyramid of energy in an ecosystem.  Which level would most likely contain members of the plant kingdom?
a)
A
b)
B
c)
C
d)
D
39.
What are the Abiotic factors in this image? 
a)
water, sunlight, dirt, air
b)
birds and plants
c)
birds, water, dirt
d)
plants, water
40.
Which of the following lists the level of biological organization in order, from least inclusive to most inclusive? 
a)
individual, community, population, ecosystem, biosphere, biome 
b)
individual, population, community, ecosystem, biome, biosphere 
c)
individual, community, ecosystem, population, biome, biosphere 
d)
individual, population, ecosystem, community, biosphere, biome 
41.

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

a)

Community

b)

Population

c)

Species

d)

Niche

42.

The living or once living organisms in an ecosystem

a)

Biology

b)

Abiotic

c)

Biotic

d)

Ecology

43.

Which of the following is the highest level of organization within the environment?

a)

population

b)

organism

c)

ecosystem

d)

biosphere

44.

These organisms must eat to obtain their energy

a)

autotrophs

b)

heterotrophs

c)

producers

d)

niche

45.

The smallest level of ecological classification

a)

population

b)

biome

c)

ecosystem

d)

organism

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