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Bio EOC Review: Ecology

Total questions: 41

Worksheet time: 26mins

Name
Class
Date
1.
Which of the following represents a POPULATION?
a)
One single alligator.
b)
A group of alligators. 
c)
Alligators, fishes, grasses, mushrooms, and bacteria.
d)
Alligators, fishes, mushrooms, bacteria, rocks, water, soil, and sunlight.
2.
Which of the following make up an ECOSYSTEM?
a)
A group of snakes.
b)
Snakes, lizards, and cacti.
c)
Snakes, lizards, cacti, sand, sunlight, rocks, and temperature (heat).
d)
Sand, sunlight, rocks, and temperature (heat).
3.
True or False: A niche is a role or position of an organism has in its environment.
a)
True
b)
False
4.
What is a limiting factor?
a)
Any biotic or abiotic factor that restricts the size of a population.
b)
The maximum number of a population an ecosystem can hold.
c)
A geologic event which controls living space.
d)
The role an organism plays in its environment.
5.
A density ____________ factor limits the size of a population, no matter the size of a population.
a)
Independent
b)
Dependent
c)
Capacity
d)
Primary
6.
What is it called when one or more organisms try to utilize the same resource? For example, trees in the rainforest all trying to use the same sunlight and water.
a)
Competition
b)
Predation
c)
Symbiosis
d)
Parasitism
7.
Producers, also known as __________, are organisms which are capable of producing their own food through the process of photosynthesis or chemosynthesis.
a)
Autotrophs
b)
Heterotrophs
c)
Consumers
d)
Herbivores
8.
Using the food web image, which of the following statements is correct?
a)
An increase in rabbits would lead to a decrease in mountain lions.
b)
A decrease in snakes would lead to a decrease in hawks.
c)
Rabbits are omnivores. 
d)
Snakes are primary consumers.
9.
Using the food web image, what would be the most direct result if there was a sudden increase in southern leopard frogs?
a)
A decrease in raccoons. 
b)
A decrease in alligators. 
c)
An increase in butterfly orchids.
d)
A decrease in mosquitos.
10.
What percent of energy is retained (passed on) from one trophic level to the next?
a)
50%
b)
100%
c)
10%
d)
90%
11.
In the food chain image, to what trophic level does the frog belong?
a)
Quaternary Consumer
b)
Primary Consumer
c)
Secondary Consumer
d)
Tertiary Consumer
12.
Using the energy pyramid image, you would expect to see the greatest number of which organism?
a)
Plants
b)
Small mammals and insects
c)
Snakes and small birds
d)
Birds of prey
13.
Nitrogen fixation is carried out primarily by
a)
humans.
b)
plants.
c)
bacteria.
d)
consumers.
14.
Animals get the most of the nitrogen they need
a)
by consuming plants or other animals.
b)
by breathing in atmospheric nitrogen.
c)
directly from bacteria in the soil.
d)
from the process of denitrification.
15.
Which of the following best explains why nitrogen fixation must take place?
a)
Atmospheric nitrogen is unusable to plants and animals
b)
Nitrogen must be returned to the atmosphere
c)
Animals must breathe in nitrogen
d)
Nitrogen gets "stuck" in the soil and must be untrapped
16.
Using the image, how does carbon enter the biotic environment?
a)
Cellular Respiration
b)
Photosynthesis
c)
Decomposition
d)
Combustion of fossil fuels
17.
A previously rapidly growing population of green tree frogs in the city park has suddenly leveled off, and is presently neither increasing or decreasing in numbers. You can probably infer that the tree frog population has reached its ____________________ _________________________.
a)
Limiting Factor
b)
Carrying Capacity
c)
Population Total
d)
Nap Time
18.

This would lead to

a)

primary succession

b)

secondary succession

19.
a)

primary succession

b)

secondary succession

20.

This image is of the...

a)

Water Cycle

b)

Carbon Cycle

c)

Nitrogen Cycle

d)

Phosphorous Cycle

21.

This is an image of...

a)

Phosphorous Cycle

b)

Water Cycle

c)

Nitrogen Cycle

d)

Carbon Cycle

22.

As plant life decreases from deforestation and fossil fuel burning increases, the CO2 levels in the air will __________, causing the greenhouse effect to increase.

a)

Rise

b)

Fall

c)

Remain Constant

d)

Fluctuate at random

23.

This is an image of the...

a)

Carbon Cycle

b)

Nitrogen Cycle

c)

Phosphorous Cycle

d)

Unicycle

24.
This is essential to living organisms, it is found in nucleic acid and amino acids.
a)
Nitrogen
b)
Carbon
c)
Water
d)
Phosphorous
25.
What is it called when water vapor cools and changes into a liquid?
a)
condensation
b)
respiration
c)
precipitation
d)
evaporation
26.
Which of the following is NOT a stage of the nitrogen cycle?
a)
organisms breathe in nitrogen gas
b)
organisms release nitrogen compounds via waste or decomposition
c)
bacteria convert unusable nitrogen to usable nitrogen
d)
plants absorb nitrogen compounds from the soil
27.
Which of the following is NOT part of the carbon cycle?
a)
condensation
b)
photosynthesis
c)
combustion
d)
respiration
28.
Which of these is the greatest cause of harmful levels of carbon in the atmosphere?
a)
respiration
b)
combustion
c)
photosynthesis
d)
decomposition
29.

Look carefully at the image. If energy is lost as it moves up the food chain, what trophic level has the most amount of energy?

a)

1st level - producers

b)

2nd level - primary consumers

c)

3rd level - secondary consumers

d)

4th level - tertiary consumers

30.

Water, sunlight, shelter, and space are resources that are often........

a)

abiotic limiting factors

b)

biotic limiting factors

c)

non-limiting factors

d)

exponetial factors

31.
What would the carrying capacity of this graph be
a)
530
b)
400
c)
500
d)
480
32.
A relationship between two organisms in which one organism benefits and the other is unharmed...
a)
Mutualism 
b)
Competition
c)
Parasitsm 
d)
Commensalism 
33.

A tapeworm lives in the intestine of a cat absorbing nutrients through its skin. A tapeworm and a cat have this type of relationship.

a)

mutualism

b)

parasitism

c)

commensalism

d)

competition

34.

Clown fish live among anemones, acting as a lure for the sea anemone's prey. The clown fish get protection and shelter from the anemone. This is an example of which type of symbiosis?

a)

Commensalism

b)

Mutualism

c)

Parasitism

35.
What is it called when a group of the same organisms living together in the same place at the same time?
a)
An organism
b)
A population
c)
A community
d)
A biome
36.
What are groups of different populations living togther in the same place at the same time called?
a)
An organism
b)
A population
c)
A community
d)
A biosphere
37.

This type of interaction occurs when 2 organisms live closely together for survival.

a)

Symbiosis

b)

Competition

c)

Predation

d)

Cymbalosis

38.

Two male deer fight over a female. This is an example of

a)

Symbiosis

b)

competition

c)

predation

39.
What are the products of photosynthesis?
a)
Carbon dioxide and water
b)
Carbon dioxide and oxygen
c)
Glucose and oxygen
d)
Glucose and water
40.
Which gas is removed from the atmosphere during photosynthesis?
a)
hydrogen
b)
oxygen
c)
nitrogen
d)
carbon dioxide
41.

Which of the following chemical equations properly demonstrates Cellular Respiration? Choose the BEST answer.

a)

C6H12O6 + O2 --> H2O + CO2

b)

H2O + CO2 -> C6H12O6 + O2

c)

C6H12O6 + 6 O2 -> 6 H2O + 6 CO2

d)

6 H2O + 6 CO2 -> C6H12O6 + 6 O2

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