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Roles in Ecosystems

Total questions: 36

Worksheet time: 27mins

Name
Class
Date
1.

A common demand by two or more organisms upon a limited supply of a resource; for example, food, water, light, space, mates, nesting sites.

a)

competition

b)

predation

c)

limiting factor

d)

carrying capacity

2.

A living thing

a)

herbivore

b)

carnivore

c)

organism

d)

producer

3.

Any biotic or abiotic component of the ecosystem that controls the size of the population

a)

population

b)

limiting factor

c)

competition

d)

predation

4.

Nonliving factors such as weather, rocks, & temperature

a)

abiotic

b)

biotic

5.

Carrying Capacity

a)

The maximum number of bags you can carry in one trip

b)

The maximum size of nuggets in a container

c)

The maximum size of a population that can be supported by a given environment

d)

The maximum size of a candy bar in a king size pack

6.

Living organisms and products of organisms

a)

biotic

b)

abiotic

7.

Population

a)

All the living things in a specified area at one time

b)

All the individuals of one kind in a specified area at one time

c)

All the living and non-living things in a specified area at one time

d)

All the non-living things in a specified area at one time

8.

All the interacting populations in a specified area

a)

population

b)

ecosystem

c)

community

d)

environment

9.

The process by which producers make energy-rich molecules (food) from water and carbon dioxide in the presence of light

a)

photosynthesis

b)

photography

c)

pyrogenics

d)

pigmentations

10.
The average number of people per square mile
a)
population distribution
b)
population density
c)
urbanization
d)
population rate
11.

An example of a population is

a)

all trees in a forest

b)

all maple trees in a forest

c)

all plants in a forest

d)

all animals in a forest

12.
What year is the zebra population the highest?
a)
1920
b)
2000
c)
1960
d)
2020
13.
What would the carrying capacity of this graph be
a)
530
b)
400
c)
500
d)
480
14.
How does energy enter an ecosystem? 
a)
sunlight
b)
soil 
c)
animals 
d)
invasive species 
15.
A system made up of organisms interacting with one another
a)
biology
b)
abiotic
c)
biotic
d)
ecosystem
16.
Food, water, sunlight, shelter, and space are resources that are  __________.
a)
limiting factors
b)
wet
c)
messy
d)
found in rocks
17.
A snake is eaten by a hawk. The hawk is the _______.
a)
prey
b)
parasite
c)
predator
d)
all of these
18.
Limiting factors are sometimes helpful because they can keep the population from getting too large.
a)
True
b)
False
19.
If the population of a certain predator increases, there is often _______ its prey
a)
a decrease the population of
b)
an increase of the population of 
c)
great news for its prey of
d)
no  impact found on
20.
If there is more food than usual in an ecosystem, then...
a)
Populations will stay the same
b)
Populations will decrease
c)
Populations will increase
21.
Any thing or organism that regulates the size of a population of another organism is known as __________.
a)
a limiting measure
b)
a limiting factor
c)
factorization
d)
materialization of precipitation
22.
If a disease destroying barley plants in a field swept through an ecosystem, what would happen to the barley eating bird population in the the field ?
a)
The bird population would stay the same
b)
The bird population would infinitely increase
c)
The bird population would decrease
23.
Which is NOT an example of a limiting factor.
a)
Climate
b)
Available Food & Water
c)
Available Space & Shelter
d)
Species color
24.

Organisms find ______________ and ________________ in their habitat.

a)

only food

b)

only shelter

c)

food and shelter.

d)

only mate

25.

In a habitat, animals have a __________, which is how they interact, get food and shelter.

a)

niche

b)

ecosystem

c)

community

d)

population

26.

When habitats and niches overlap, animals compete for...

a)

nothing

b)

resources

c)

everything

d)

habitat

27.

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

a)

Symbiosis

b)

Competition

c)

Predation

d)

Cymbalosis

28.

_______ occurs when 1 organisms kills and eats another for food.

a)

Symbiosis

b)

Competition

c)

Predation

d)

Collaboration

29.

A lion kills and eats a zebra. This is an example of

a)

Symbiosis

b)

Competition

c)

Predation

30.

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

a)

Symbiosis

b)

competition

c)

predation

31.

The Gobi fish and shrimp live closely together. The nearly blind shrimp keeps a burrow for it and the Gobi fish to live. The Gobi warns the shrimp of predators. The shrimp lets the fish live in the burrow. This is an example of

a)

mutualism

b)

commensalism

c)

parasitism

32.

Hermit crabs use the shells of dead snails for homes. What type of interaction is this?

a)

mutualism

b)

commensalism

c)

parasitism

33.

Tapeworms enter the body of their host. They live by taking nutrients from the host organism. This is an example of

a)

mutualism

b)

commensalism

c)

parasitism

34.

A type of symbiosis in which both species benefit is called...

a)

mutualism

b)

commensalism

c)

parasitism

35.

A type of symbiosis in which one species benefits and the other is not affected is...

a)

mutualism

b)

commensalism

c)

parasitism

36.

A type of symbiosis in which one species benefits and the other is harmed or killed...

a)

mutualism

b)

commensalism

c)

parasitism

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