WorksheetsPopulations & Communities
Total questions: 48
Worksheet time: 34mins
Name
Class
Date
1.
Temperature, light, air, water, soil and climate are all ______ parts of the environment.
a)
biotic
b)
abiotic
c)
living
d)
boreal
2.
Choose the phrase that correctly finishes this statement: "A species is....."
a)
a specific part of the abiotic environment
b)
a way of describing all the living parts of an ecosystem
c)
a group of organisms that can successfully mate with each other and reproduce
d)
part of the natural decomposing materials in soil
3.
Ecology is the study of the
a)
abiotic parts of the environment, such as climate, air, and soil
b)
biotic parts of the environment, such as animals and plants
c)
interactions between organisms
d)
interactions between organisms as well as the interactions between organisms and their environment
4.
What is an ecosystem?
a)
All the interacting organisms that live in an environment and the abiotic parts of the environment that affect the organisms
b)
A person who observes and studies the interactions between the biotic and abiotic parts of the environment
c)
The relationship among the biotic parts of the environment
d)
The relationship between all the abiotic elements of a pond
5.
An abiotic factor can kill a biotic factor.
a)
True
b)
False
6.
Which of the following is TRUE?
a)
Abiotic factors are living things in an ecosystem.
b)
Biotic factors are non-living things in an ecosystem.
c)
Abiotic factors can eat biotic factors.
d)
Abiotic factors can kill biotic factors.
7.
Which is a biotic factor?
a)
A lake
b)
The air
c)
A tree
8.
What is a population?
a)
all members of a species that live in an ecosystem
b)
all of the groups in an ecosystem
c)
a family of animals that live in the same group
d)
the biotic and abiotic parts of an ecosystem
9.
Why do communities have different types of organisms?
a)
to have variety
b)
to support each other
c)
to survive
10.
How do populations and communities affect one another?
a)
animals in populations also live in communities
b)
they cannot affect each other
c)
a change in a population can cause a change in community
d)
all of the above
11.
When the birth rate is larger in any given period than the death rate the population will __________.
a)
increase
b)
decrease
c)
stay the same
12.
When the death rate is larger in any given period than the birth rate the population will __________.
a)
increase
b)
decrease
c)
stay the same
13.
When the size of a population changes because individuals move in, it is called _____________.
a)
immigration
b)
emigration
c)
visiting
d)
rude
14.
Which of the following lives in a prairie ecosystem?
a)
grass
b)
mushroom
c)
oak tree
d)
woodpecker
15.
Which of the following lists the levels of an ecosystem in order from largest to smallest?
a)
population, organism, community, ecosystem
b)
ecosystem, community, organism, population
c)
organism, community, population, ecosystem
d)
ecosystem, community, population, organism
16.
When the size of the population decreases because individuals leave, that is called ___________.
a)
immigration
b)
emigration
c)
visiting
d)
rude
17.
Which is true?
a)
In 1995, the moose population fell.
b)
A limiting factor for the wolves is the number of moose.
c)
There were no wolves or moose on the island in 1955.
d)
The number of moose depends only on the number of wolves.
18.
The largest population that an area can support is called its ________.
a)
limiting factor
b)
food source
c)
carrying capacity
d)
ecosystem
19.
Which of the following is a biotic factor?
a)
temperature
b)
sunlight
c)
bacteria
d)
water
20.
An organism gets food, water, shelter, and other things it needs to live, grow, and reproduce from its
a)
population
b)
habitat
c)
abiotic factors
d)
species
21.
When the hare population increases, what happened to the lynx population?
a)
It rose.
b)
It fell.
c)
It stayed the same.
22.
Did the bird population appear to benefit from the elimination of the rattlesnakes?
a)
Yes, it did.
b)
No, it didn't.
c)
It didn't seem to benefit or harm the bird population.
23.
When a snake kills a shrew, the shrew is the
a)
host
b)
prey
c)
predator
d)
parasite
24.
An example of an adaptation that helps a prey species avoid being caught is
a)
claws
b)
mimicry
c)
sharp teeth
d)
poisonous stingers
25.
The role of an organism in its habitat is its
a)
host
b)
prey
c)
niche
d)
adaptation
26.
A relationship in which two species live closely together and both benefit is
a)
mutualism
b)
predation
c)
parasitism
d)
commensalism
27.
In ________, individuals whose unique characteristics are well-suited for an environment tend to survive and produce more offspring.
a)
natural selection
b)
mutualism
c)
adaptations
d)
predator/prey relationships
28.
The series of predictable changes that occur in a community over time is called.
a)
natural selection
b)
ecology
c)
commensalism
d)
succession
29.
The most important abiotic factors when studying biomes are...
a)
Food and Water
b)
Water and Sunlight
c)
Temperature and Oxygen
d)
Water and Temperature
30.
Which of the following formulas represents photosynthesis?
a)
6 H2O + 6 O2 = C6H12O6 + 6 CO2
b)
6 H2O + 6 CO2 = C6H12O6 + 6 O2
c)
C6H12O6 + + 6 O2 = 6 H2O + 6 CO2
31.
What is a herbivore?
a)
an animal that gets energy from eating other animals
b)
an organism that gets energy from eating only plants
c)
an animal that gets energy by eating both plants and other animals
32.
An organism that gets energy from eating other organisms is a ______________
a)
producer
b)
consumer
c)
decomposer
33.
Which of the following is NOT a consumer
a)
grass
b)
dog
c)
shark
d)
fish
34.
This is a close relationship that exists when two are more species live together.
a)
Symbiosis
b)
Predation
c)
Mutualism
d)
Commensalism
35.
A symbiotic relationship in which both organisms benefit.
a)
Commensalism
b)
Predation
c)
Mutualism
d)
Parasitism
36.
A symbiosis in which one organism benefits and the other is harmed.
a)
Predation
b)
Parasitism
c)
Commensalism
d)
Mutualism
37.
Name this symbiosis:
a)
Mutualism
b)
Commensalism
c)
Parasitism
d)
Predation
38.
The shrew provides energy for the _______?
a)
cricket
b)
grasshopper
c)
frog
d)
snake
39.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
40.
In the energy pyramid here, which organisms have the most energy available?
a)
Producers
b)
Carnivores
c)
Herbivores
d)
Top Predator
41.
Which of the following organisms in the food web is a producer?
a)
Giant Panda
b)
Snow Leopard
c)
Mushroom
d)
Bamboo
42.
The deer, grasshopper, and bird are all examples of which type of consumers on this food pyramid?
a)
decomposers
b)
omnivores
c)
carnivore
d)
herbivore
43.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
44.
Plants need ________ for photosynthesis
a)
oxygen
b)
soil
c)
carbon dioxide
d)
sugar
45.
What are the bubbles rising in the test tube?
a)
nitrogen gas
b)
carbon dioxide gas
c)
glucose
d)
oxygen gas
46.
the long term average weather conditions that occur in a particular region
a)
precipitation
b)
climate
c)
weather
47.
What is Chlorophyll?
a)
An organism that makes its own food
b)
Green pigment in plants that absorbs light energy used to carry out photosynthesis
c)
An organism that gets its food from other living organisms
d)
The process by which yeasts and other microorganisms break down sugars.
48.
Chlorophyll absorbs what in photosynthesis?
a)
Water
b)
Sunlight
c)
Oxygen
d)
Carbon Dioxide
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