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Ms. Clark's BIO Ecology EOC Review

Total questions: 40

Worksheet time: 40mins

Name
Class
Date
1.

What converts nitrogen gas into a usable form for plants and animals?

a)

bacteria

b)

rain

c)

fungi

d)

car exhaust

2.

Consider the following food chain:

Algae > Mayfly > Minnow > Trout

In a polluted ecosystem, which organism would likely have the HIGHEST level of toxic chemicals in its body?

a)

Algae

b)

Mayfly

c)

Minnow

d)

Trout

3.

The hermit crab carrying the sea anemone on its back.

a)

mutualism

b)

commensalism

c)

parasitism

4.
The most effective way to protect biodiversity is through...
a)
habitat fragmentation
b)
habitat destruction
c)
habitat preservation
5.
How can humans best help an endangered species avoid extinction?
a)
They can feed the animals
b)
they can put the animals in a zoo
c)
they can protect the animals habitat
d)
they can take the animal to new habitats
6.
Which human activity contributes the MOST carbon dioxide to the atmosphere?
a)
Fishing
b)
Breathing
c)
Burning Fossil Fuels
d)
Farming
7.

What is the cause of coral bleaching.

a)

Space Heaters

b)

Pollution

c)

Hot air

d)

Global Warming

8.
When a population grows past the ecosystem's carrying capacity, what happens to the population?
a)
Continues to grow
b)
The population starts to die off to return to carrying capcity
c)
The population will go extinct due to lack of resources
d)
The population grows then finds a new carrying capacity
9.

What causes a population size to decrease?

a)

The number of births is greater than the number of deaths.

b)

The number of deaths is greater than the number of births.

c)

The number of births and the number of deaths is equal.

10.

In this food chain, what is the quaternary consumer?

a)

Osprey

b)

Freshwater Shrimp

c)

Minnow

d)

Perch

e)

Pike

11.

If the GRASS became diseased, which organisms would also be NEGATIVELY affected?

a)

Rabbits only

b)

Rabbits and snakes

c)

Rabbits, snakes, and hawks

d)

Rabbits and hawks (snakes benefit)

12.
An environmental change that removed which of these organisms from the ecosystem would cause the most instability in the ecosystem?
a)
Auklets
b)
Foxes
c)
Salmon
d)
Zooplankton
13.
Which of the following is a key characteristic of most invasive species?
a)
Ability to breathe in the air & in the water
b)
Large, sharp teeth
c)
Produce many offspring
d)
Is a top predator
14.
1. What makes a species invasive?
a)
Moving to a new ecosystem and taking resources from natives 
b)
Not having papers
c)
Species that can't adapt
d)
Plants that take up too much space
15.
In the energy pyramid below, which organism has the least amount of energy available?
a)
Producers
b)
Herbivores
c)
Carnivores
d)
Top Predator
16.

What would happen to the bird if the green fish died out?

a)

The bird population would grow

b)

The smaller fish will die out

c)

The bird population will die out

17.

Which of the following would NOT be an example of a density dependent limiting factor?

a)

fire

b)

disease

c)

lack of food

d)

space

18.

What is the carrying capacity of the graph?

a)

around 500

b)

more than 800

c)

less than 300

d)

around 700

19.
One solution for reducing the amount of atmospheric carbon dioxide would be to
a)
increase oceanic temperatures to enhance carbon dioxide uptake
b)
increase the rate of removal of tropical rain forests
c)
decrease the total area of rice paddies
d)
decrease the use of fossil fuels
20.

Which of the following is a density-dependent factor?

a)

Disease

b)

Weather

c)

Volcanoes

d)

Earthquakes

21.

Habitats can be preserved by...

a)

Reducing recycling

b)

Building more roads

c)

Reducing pollution, developing conservation parks

d)

Introducing invasive species

22.
Red-billed oxpeckers are birds that often feed on parasites that infest impala.  This is an example of _______.
a)
commensalism
b)
mutualism
c)
neutralism
d)
competition
23.

Some small fish attach themselves to the body of a shark without harming it and feed upon its left over food. This relationship between the shark and the fish is an example of

a)

commensalism

b)

mutualism

c)

competition

d)

parasitism

24.
Which of the following symbiotic relationships is considered parasitic?
a)
Ticks feeding on a dog
b)
Bees transporting pollen from flowers
c)
Pilotfish swimming under sharks
d)
Birds eating the insects fromo the back of hippo
25.

What happens to most of the energy that is not passed on to each trophic level?

a)

The energy is lost as air

b)

The energy is lost as heat

c)

the energy is lost as light

d)

The energy is lost as sunlight

26.

To have less nitrate in this cycle you would have to have _________________________

a)

more nitrobacter

b)

more nitrosomonas

c)

More plants

d)

fewer plants

27.
The Nature Conservancy is an organization that protects a variety of habitats around the world. A project this organization would probably support is one that
a)
uses endangered animals for medical research
b)
protects biodiversity for future generations
c)
alters habitats for industry and housing 
d)
prevents animal species from migrating to other habitats
28.
Which of these describes a mutually beneficial relationship between two organisms?
a)
A dog with worms in its intestine
b)
A turtle and a snail that both eat grass live in a river
c)
A honeybee pollinating a plant and receiving nectar for food
d)
A small fish attached to a shark, eating tiny pieces of the shark's food as it floats
29.
Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales.
a)
Mutualsim 
b)
Parasitism 
c)
Commensalism 
30.

Ants offer protection for the aphids who (have no protective features of their own) would otherwise would be food for all sorts of organisms. The aphids “repay” the ants by providing honeydew (a liquid they secrete) for the ants to use as food.

a)

symbiosis

b)

parasitism

c)

mutualism

d)

commensalism

31.

Which of the following is a consequence of global warming? (Choose all that apply)

a)

Seas rising (flooding)

b)

Loss of habitat for animals.

c)

More severe storms and weather.

d)

Increased forest fires and drought.

32.

What determines the type of symbiotic relationship organisms have?

a)

What kind of climate is present where they live.

b)

How much food is available to them.

c)

How many offspring they can have.

d)

What kind of effect they have on each other.

33.
Which of these organisms are in a trophic level that receives a larger percentage of the energy captured by the producers than the percentage received at the bats’ trophic level?
a)
Mountain Lion
b)
Snake
c)
Hawk
d)
Ground Squirrel
34.

Invasive species. . . .

Check all that are true.

a)

take over the habitat of other organisms.

b)

increases the populations of native organisms.

c)

decrease biodiversity.

d)

increase biodiversity.

e)

cause the populations of native organisms to decrease.

35.

Kudzu has overgrown many parts of South Carolina and native ground plants have disappeared from the area. This is an example of ---

a)

Parasitism between kudzu and the native plants.

b)

A predator prey relationship between ground plants and kudzu.

c)

Competition occurring between the native and invasive species.

d)

Commesalism occurring between the kudzu and native plants.

36.

What do invasive species do to the habitat they move into?

a)

crowd out local plants and animals

b)

eat all the mice and deer

c)

create a food chain

37.

This may cause a population to increase

a)

increase of food supply

b)

removal of predators

c)

removal of disease

d)

all of these

38.

A scientist was studying a population of fish in a pond over a period of 10 years. He observed that the population increased each year for 3 years, and then remained nearly constant for the rest of the study. The best explanation for this observation is that the population had

a)

stopped reproducing

b)

reached carrying capacity

c)

mutated into a different species

d)

run out of food and all died

39.

What type of organism uses sunlight to produce food?

a)

autotroph

b)

heterotroph

c)

consumer

d)

predator

40.

The largest threat to biodiversity is

a)

bacteria

b)

fungi

c)

humans

d)

plants

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