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B24 #22-23 Interactions & Growth/ Limiting Factors

Total questions: 40

Worksheet time: 33mins

Name
Class
Date
1.
A key stone species is...
a)
the top carnivore.
b)
has the largest population.
c)
has the most specialized niche.
d)
determines numbers and types of other species.
2.
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
3.
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
4.
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
5.
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
6.
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
7.
What is the name of an animal that is hunted and eaten by other animals?
a)
producer
b)
prey
c)
predator
d)
decomposer
8.
___ 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
9.
The concept that herbivores can affect both the size and distribution of plants is known as 
a)
predation
b)
commensalism
c)
herbivory
d)
keystone species
10.

a relationship between two species in which both species compete for limited resources such that both species are negatively affected by the relationship

a)

Symbiosis

b)

interspecific competition

c)

species richness

d)

species-area effect

11.

A relationship in which two different organisms live in close association with each other

a)

interspecific competition

b)

Mutualism

c)

Symbiosis

d)

Commensalism

12.

the differentiation of niches that enables similar species to coexist in a community

a)

character displacement

b)

climax community

c)

niche partitioning

d)

pioneer species

13.
The ecological niches of three bird species are shown in the diagram. What is the advantage of each bird species having a different niche?
a)
As more birds feed higher in the tree, available energy increases.
b)
More abiotic resources are available for each bird.
c)
Predators are less likely to feed on birds in a variety of locations.
d)
There is less competition for food.
14.
When put together, one organism outcompetes the other for resources.  This is an example of:
a)
competitive exclusion principle
b)
speciation
c)
biological niche
d)
evolution
15.
Based on the graph shown, how can you tell sea otters are a keystone species?
a)
as the sea otter population decreases, biodiversity increases
b)
as sea otter population increases, biodiversity increases
c)
changes in the sea otter population have little effect on biodiversity 
d)
the sea otter population dereases due to the presence of urchins
16.

Overall, all the interactions between organisms in ecosystems...

a)

Keep ecosystems & populations unstable and random

b)

Keep ecosystems & populations stable and balanced

17.

This interaction occurs when lions, cheetahs, and leopards all need the same food source.

a)

Intraspecific Competition

b)

Interspecific Competition

c)

Predation

d)

Mutualism

18.

Parasites and predators help maintain ecosystem stability because...

a)

They increase the population of all organisms so ecosystems become diverse

b)

They decrease the population of certain organisms to ensure no species overpopulates

c)

They increase the survival of all species

d)

Any of the above are possible

19.

What are survivorship curves?

a)

curves that describe the number of survivors over time

b)

curves that tell us what the limiting factors are

c)

curve that tells us about the carrying capacity

d)

a curve

20.

Why don't populations grow indefinitely?

a)

limiting factors

b)

only biotic factors

c)

only abiotic factors

d)

none of the above

21.

What is the arrow pointing at?

a)

carrying capacity

b)

biotic potential

c)

density-independent

d)

density dependent

22.

parasites, disease, predators, are examples of what type of limiting factors?

a)

density dependent

b)

density independent

c)

survivorship

d)

type 1 curve

23.

What is the carrying capacity mean?

a)

The number of individuals an area can carry

b)

the number of births

c)

The number of deaths an area has

d)

not sure

24.

The exponential graph is a graph that shows us population size increasing quickly, which one below shows us that

a)
b)
c)
d)
25.

What type of growth model is shown in image A?

a)

Exponential

b)

Logistic

26.

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

a)

forest fire

b)

seasonal cycles

c)

storms

d)

disease

27.

Which of the following are density dependent factors?

a)

competition for resources

b)

predation

c)

disease

d)

natural disasters

28.

It's the number of organisms per unit area.

a)

community

b)

population capacity

c)

population density

d)

temporary population

29.

The pattern of spacing a population within an area.

a)

dispersion

b)

emigration

c)

migration

d)

immigration

30.

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

a)

uniform dispersion

b)

random dispersion

c)

clumped dispersion

d)

unknown

31.

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

32.
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
33.

The dispersion pattern (distribution pattern) of a population describes the arrangement of individuals within a habitat at a particular point in time -

Animals that maintain defined territories, such as nesting penguins, also exhibit which type of dispersion?

a)

Clumped dispersion

b)

Uniform dispersion

c)

Random dispersion

34.

The dispersion pattern (distribution pattern) of a population describes the arrangement of individuals within a habitat at a particular point in time -

A large population of geese gathered together in a marsh is which type of dispersion?

a)

Clumped dispersion

b)

Uniform dispersion

c)

Random dispersion

35.

The dispersion pattern (distribution pattern) of a population describes the arrangement of individuals within a habitat at a particular point in time -

Dandelions and other plants that have wind-dispersed seeds spread widely and sprout where they happen to fall describes which type of dispersion?

a)

Clumped dispersion

b)

Uniform dispersion

c)

Random dispersion

36.

A lion and a cheetah attempt to occupy the same niche. The more aggressive lion survives; the cheetah does not.

a)

Density-Dependent: Competition

b)

Density-Independent: Competition

c)

Density-Dependent: Predator-Prey

d)

Density-Independent: Predator-Prey

37.

Since lynx prey on hares, an increase in the hare population causes an increase in the lynx population.

a)

Density-Dependent: Competition

b)

Density-Independent: Competition

c)

Density-Dependent: Predator-Prey

d)

Density-Independent: Predator-Prey

38.

A group of elephants gets stuck in mud at the edge of the river from a recent mud slide. A lion waits for an elephant to get tired before it attacks. What is the limiting factor to the elephant population?

a)

Density dependent: Predator-Prey Relationships

b)

Density independent: Natural Disaster

c)

Density dependent: Herbivory Effect

d)

Density independent: Competition

39.

A duck population normally begin migrating south right after the last rain of the late summer season. Suddenly, they’re migrating much earlier. The climate has been changing far too often which is altering the effects of their magnetite.

a)

Density dependent: Predator-Prey Relationships

b)

Density independent: Weather

c)

Density dependent: Herbivory Effect

d)

Density independent: Competition

40.

The wolf goes extinct, and the deer population has no predator to worry about. They graze the land. Because there is no more food. Some of the deer begin to bite at each other, while others die of starvation. What is the limiting factor to the deer population?

a)

Density dependent: Competition and overcrowding

b)

Density dependent: weather

c)

Density dependent: Predator-Prey Relationships

d)

Density dependent: Herbivory Effect