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Biology Unit 8 Review

Total questions: 68

Worksheet time: 34mins

Name
Class
Date
1.
An organism's _________ is defined as the environment in which it lives.
a)
habitat
b)
niche
c)
social structure
d)
ecosystem
2.

500,000 raccoons live in the same habitat, They are considered a ____________________

a)

species

b)

community

c)

population

d)

biomes

3.

Polar bears have physical features that allow them to live in colder places like the Arctic, where as the the brown bear is better suited to live in the woodlands. Which of the following key term best describes theses descriptions

a)

niche

b)

habitat

c)

dwelling place

d)

house

4.

In a deciduous forest habitat of Canada, there are populations of deer, oak trees, foxes and rabbits. Which level of organization best describes this description

a)

ecosystem

b)

biomes

c)

community

d)

biosphere

5.

Which of the following shown in the habitat diagram could be identified as a abiotic factor

a)

rocks

b)

tiger

c)

parrot

d)

plants

6.
Starfish are probably the most important predator in the shallow ecosystem because they eat basically anything that they can come across. Their feeding activities control the whole ecosystem. This is an example of the starfish ___.
a)
habitat
b)
biotic factors
c)
tolerance level
d)
niche
7.

Which diagram shows both biotic and abiotic factors making-up the ecosystem level

a)

1

b)

2

c)

3

d)

4

8.

The lion is a carnivore (it eats other animals.)

a)

habitat

b)

niche

9.
The lion lives on the savanna. 
a)
habitat
b)
niche
10.
___ states that two species cannot exist together if they compete for the same resources. One will either die out or migrate, or they will adapt to separate resources.
a)
Hardy-Weinberg Principle
b)
Limiting Nutrient Principle
c)
Competitive Exclusion Principle
d)
Tolerance Principle
11.
What curve is Line B demonstrating 
a)
Primary Succession 
b)
Exponential Growth
c)
Secondary Succession 
d)
Carrying Capacity
12.
If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?
a)
It will increase.
b)
It will decrease.
c)
It will stay the same.
d)
It will fluctuate.
13.
Plants and animals that are not native to a habitat (nonindigenous)...
a)
predators
b)
biological magnification
c)
invasive species
d)
prey
14.
What is the approximate carrying capacity of Paramecium aurelia cultured alone?
a)
150
b)
400
c)
450
d)
500
15.
To measure population density, you must divide the number of individuals living in a defined space by the
a)
area of the space
b)
birth and death rates
c)
carrying capacity
d)
height of the space
16.
Which of the following is a density-dependent limiting factor?
a)
human activities 
b)
unusual weather
c)
competition
d)
natural disaster
17.
What is the carrying capacity for this sheep population?
a)
1.8 million
b)
1.25 million
c)
1.6 million
d)
1.o million
18.

True or False. Keystone species are typically the most abundant species within a community

a)

True

b)

False

19.

A producer

a)

Eats grass

b)

Makes its own food

c)

Does not need food(energy)

d)

Is a primary consumer

20.

A primary consumer

a)

makes its own food

b)

eats other animals

c)

is a carnivore

d)

consumes the producer

21.

An animal that only feeds on plants is called

a)

Vegetarian

b)

Herbivore

c)

Carnivore

d)

Vegan

22.

A secondary consumer

a)

Only eats meat

b)

Only eats plants

c)

makes its own food

d)

eats the primary consumer

23.

Carnivores

a)

Animals that feeds on flesh and plants

b)

An animal that doesn't like meat

c)

An animal that feeds on flesh

d)

A human

24.

The first trophic level is

a)

Carnivore

b)

Producer

c)

Primary Consumer

d)

Herbivore

25.

tertiary consumers

a)

Eat the primary consumer

b)

Eat plants and animals

c)

Consume the producer

d)

eat the secondary consumer

26.

How much energy is moved from one trophic level to the next trophic level?

a)

100%

b)

1/2

c)

10%

d)

25%

27.

A food chain shows ___ feeding relationship(s)

a)

2

b)

multiple

c)

1

d)

all

28.

How many calories will be passed on from 250 to the next trophic level?

a)

2,500

b)

25

c)

2.5

d)

10%

29.

A large community of organisms in a certain area is

a)

a trophic level

b)

an ecosystem

c)

a family

d)

consumers

30.

Which best describes what a food chain shows you?

a)

Energy flow through an ecosystem

b)

Food flowing through an ecosystem

c)

Consumers going into other consumers

d)

Who eats who

31.

The owl receives energy from which organisms?

a)

grasshopper and mouse

b)

rabbit and butterfly

c)

mouse and rabbit

d)

butterfly and frog

32.

What would happen to the blue whale population if the krill population went extinct?

a)

the blue whale population eats other things in the food web

b)

the blue whale population would increase

c)

The blue whale population would remain the same.

d)

the blue whale population would also decrease

33.

What type of consumer is the shrew?

a)

secondary consumer

b)

primary consumer

c)

tertiary consumer

d)

Answer choices A&B

34.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle
35.
Identify the cycle pictured.
a)
The Water cycle
b)
The Carbon cycle
c)
The Nitrogen cycle
d)
The Phosphorus cycle.
36.

Identify the cycle pictured.

a)

The Water cycle

b)

The Carbon cycle

c)

The Nitrogen cycle

d)

The Phosphorus cycle.

37.

Identify the cycle pictured.

a)

The Water cycle

b)

The Carbon cycle

c)

The Nitrogen cycle

d)

The Phosphorus cycle.

38.

Number of individuals per unit area or volume.

a)

denisty

b)

dispersion

c)

survivorship

d)

immigration

39.

The pattern of spacing among individuals within the boundaries of the population.

a)

dispersion

b)

density

c)

immigration

d)

survivorship

40.

New individuals move into a population.

a)

immigration

b)

emigration

c)

migration

d)

survivorship

41.

When individuals in a population move out or away.

a)

emigration

b)

immigration

c)

migration

d)

dispersion

42.

A good way to estimate the population size.

a)

mark-recapture

b)

count everyone of them

c)

satellites

d)

cameras

43.

Individuals gather in patches, influenced by resource availability and behavior.

a)

clumped dispersion

b)

random dispersion

c)

uniform dispersion

d)

isolated dispersion

44.

Individuals are evenly distributed, influenced by interactions between organisms in the population.

a)

uniform dispersion

b)

random dispersion

c)

clumped dispersion

d)

isolated dispersion

45.

Position of each individual is independent of other individuals, occurs in the absence of strong attractions or repulsion's.

a)

random dispersion

b)

clumped dispersion

c)

uniform dispersion

d)

isolated dispersion

46.

A graphic way of representing the data in a life table.

a)

survivorship curve

b)

exponential growth curve

c)

logistic growth curve

d)

lag phase

47.

Survivorship curve represented with low death rates during early and middle life, then an increase among older age groups, a good example are humans.

a)

type I

b)

type II

c)

type III

d)

type IV

48.

Survivorship curve represented by a death rate that is constant over organism’s life span, squirrels and songbirds are good examples.

a)

type I

b)

type II

c)

type III

d)

type IV

49.

Survivorship curve represented by high death rates for the young, then a slower death rate for survivors, good examples are fish and frogs.

a)

type I

b)

type II

c)

type III

d)

type IV

50.

Regardless of population size or density, these factors affect all populations similarly...

a)

density-dependent limiting factors

b)

density-independent limiting factors

c)

carrying capacity

d)

exponential growth

51.
The sea otter is a(n) ___________ that influences the survival of many other species in its ecosystem.
a)
Cute furry creature
b)
endangered species
c)
keystone species
d)
important animal
52.
__________ growth shows growth of a population under environmental constraints (carrying capacity-K) that sets a maximum population size 
a)
logistic
b)
exponential
c)
niche
d)
uniform
53.
________ grow slowly over time, cares for its young over a long period of time and is usually near the carrying capacity of its ecosystem.
a)
K-strategists
b)
R-strategists
c)
Uniform strategists
d)
environmentalists
54.
J-Shaped curves
a)
show a decline after an increase
b)
display populations that have reached carrying capacity
c)
represent exponential growth
d)
does not depend on the numbe rof resources
55.

Two male Giraffes are fighting over the last green leaf of a tree that is dying.

a)

Intraspecific Competition

b)

Mutualsim

c)

Predation

d)

Commensalism

e)

Interspecific Competition

56.
Which factor is a density-dependent limiting factor on the population of a species?
a)
seasonal variation
b)
natural disasters
c)
unusual weather
d)
predation
57.

Which of the following are density dependent factors?

a)

competition for resources

b)

predation

c)

disease

d)

natural disasters

58.

Which of the following are examples of a density independent factors?

a)

forest fire

b)

seasonal cycles

c)

storms

d)

disease

59.

This graph shows ....

a)

When one population increases, the other decreases.

b)

When one population decreases, the other increases.

c)

When one population increases, the other increases instantly.

d)

When one population increases, it causes the other to increases shortly after.

60.

The penguins are spread out evenly. This is an example of

a)

uniform dispersion

b)

random dispersion

c)

clumped dispersion

d)

unknown

61.

These animals are scattered in this area in no particular order. This is an example of

a)

random dispersion

b)

uniform dispersion

c)

clumped dispersion

d)

unknown

62.

Bird & Tree: A bird builds a nest in a hole in the trunk of the tree. It is protected from the rain and predators. The tree is not harmed or helped by the bird.

a)

Mutualism

b)

Commensalism

c)

Parasitism

63.

A human & a Tape Worm: The tape worm gets a place to live in the intestines of the human and food from the human. The human loses weight and nutrients from the tape worm.

a)

Mutualism

b)

Commensalism

c)

Parasitism

64.
What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.
a)
commensalism
b)
mutualism
c)
parasitism
d)
predation
65.

Tree kangaroos live in the upper branches of trees in the rainforests of Queensland, as well as on the island of New Guinea. This is an example of the tree kangaroos ___.

a)

niche

b)

habitat

c)

community

d)

population

66.
Rabbits and deer eat lettuce leaves from a garden.
What ecological interaction describes the relationship between rabbits and deer?
a)
Mutualism
b)
Competition
c)
Commensalism
d)
Predation
67.

Several species of warblers can live in the same spruce tree ONLY because they

a)

have different habitats within the tree.

b)

don’t eat food from the tree.

c)

occupy different niches within the tree.

d)

can find different temperatures within the tree.

68.

Which of the following represents several species of poisonous snakes bearing bright colors of red, black, and yellow?

a)

commensalism

b)

mutualism

c)

Batesian mimicry

d)

Mullerian mimicry

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