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WorksheetsEcology
Total questions: 56
Worksheet time: 36mins
Name
Class
Date
1.
Which organism do the owl and the weasel compete for in the food web?
a)
Hawk
b)
Spider
c)
Grasshopper
d)
Shrew
2.
Which of the following is a herbivore?
a)
cricket
b)
frog
c)
hawk
d)
shrew
3.
How many carnivores are shown in this food web?
a)
6
b)
4
c)
5
d)
3
4.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
5.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
6.
Which of the following best describes the small bird in the food web above?
a)
primary and secondary consumer
b)
secondary and tertiary consumer
c)
primary consumer only
d)
secondary consumer only
7.
A frog eats a fly. The frog and fly are demonstrating ________.
a)
mutualism
b)
competition
c)
predator/prey
d)
parasitism
8.
A tapeworm inside a dog is
a)
competition
b)
predation
c)
commensalism
d)
parasitism
9.
A symbiotic relationship that involves species having to fight for something they both need or want
a)
competition
b)
predation
c)
commensalism
d)
parasitism
10.
Plants both trying to get sunlight are
a)
commensalism
b)
mutualism
c)
compeition
d)
parasitism
11.
How many herbivores are in this web?
a)
1
b)
2
c)
3
d)
4
12.
How many primary consumers are there in this food web?
a)
1
b)
2
c)
3
d)
4
13.
What are "trophic levels"?
a)
Levels in a food web/food chain
b)
Levels of land in a mountain
c)
Animal diets
14.
The ___% rule states that only ____% of energy is transferred to the next trophic level.
a)
10%
b)
25%
c)
50%
d)
100%
15.
Where did all of the energy in this food web originally come from?
a)
Soil
b)
Producers
c)
Air
d)
Sun
16.
In a food web, what would a decomposer do?
a)
Eat soil and rock
b)
Feed on meat or plants
c)
Break down dead organisms
d)
Convert carbon dioxide to oxygen
17.
Which of the following could be considered a primary consumer?
a)
Rabbit
b)
Insect Eating Bird
c)
Snake
d)
Hawk
18.
Which of the following could be considered a secondary consumer?
a)
Rabbit
b)
Deer
c)
Shrew
d)
Squirrel
19.
Which level of consumer would the mountain lion NOT BE?
a)
Primary COnsumer
b)
Secondary Consumer
c)
Tertiary Consumer
d)
Quaternary Consumer
20.
If we removed the grasshopper from the food web, how many other organisms would be affected?
a)
1
b)
2
c)
3
d)
more than 4
21.
Without bacteria in the ecosystem, what would happen?
a)
THere would be no oxygen available
b)
Nobody would ever get sick again.
c)
Nothing would change
d)
Dead materials would pile up.
22.
Which level has the most energy available for consumers?
a)
Producer
b)
Primary Consumer
c)
Tertiary Consumer
d)
Decomposer
23.
Which way do the arrows point?
a)
Towards the animal doing the eating.
b)
Towards the animal being eaten.
c)
Right
d)
Wrong
24.
How do producers obtain energy?
a)
They conduct photosynthesis.
b)
They consume plants.
c)
They consume primary consumers.
d)
They consume secondary consumers.
25.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a ecosystem.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms.
d)
How carnivores get their food.
26.
If the grasshopper were to be removed completely from the food web, what organism would be most effected?
a)
The squirrel
b)
The shrew
c)
The deer
d)
The rabbit
27.
Which organism receives the least amount of energy from the producer?
a)
Owl
b)
Grasshopper
c)
Lilypad
d)
Mouse
28.
Which of the following is not a heterotroph?
a)
grass
b)
mouse
c)
grasshopper
d)
rabbit
29.
Which of the following is not a secondary consumer?
a)
hawk
b)
lizard
c)
mouse
d)
snake
30.
Which of the following receives the least amount of energy?
a)
grass
b)
mouse
c)
rabbit
d)
snake
31.
Which of the following would be the most likely effect, if there were a sudden increase in the cricket population?
a)
There would be a decrease in the small bird population.
b)
There would be a decrease in the grass/flowers population.
c)
There would be a decrease in the mice population.
d)
There would be an increase in the grass/flowers population.
32.
Organisms that makes its own food using sunlight or chemicals; producer
a)
decomposer
b)
autotroph
c)
heterotroph
d)
herbivore
33.
The grass that the mice eat contains energy. What is the source of energy for the grass?
a)
Rainwater
b)
The Sun
c)
The soil
d)
Minerals
34.
Which is NOT an abiotic factor:
a)
soil
b)
air
c)
bacteria;
d)
water
35.
A food web can be broken down into several seperate
a)
food chains
b)
food pyramids
c)
producers
d)
consumers
36.
What might occur when a carnivore is removed from the food web?
a)
A) Nothing. Organisms cannot impact things below them on the energy pyramid.
b)
B) Primary consumers will overpopulate.
c)
C) Plants will be over browsed by herbivores.
d)
D) both B and C might occur.
37.
relationship in which two species live closely together
a)
resource
b)
mutualism
c)
succession
d)
symbiosis
38.
A living relationship between two species in which one organism is harmed is called...
a)
mutualism
b)
commensalism
c)
parasitism
d)
niche
39.
What might happen if you remove a primary consumer from the ecosystem?
a)
There would be more food for secondary consumers.
b)
The number of primary consumers would increase.
c)
The number of plants would increase.
d)
The number of secondary consumers would increase.
40.
How do producers obtain energy?
a)
They conduct photosynthesis.
b)
They consume plants.
c)
They consume primary consumers.
d)
They consume secondary consumers.
41.
diagram that shows the energy available to each trophic level in an ecosystem; 10% is passed on to upper levels, the rest is lost as heat
a)
succession
b)
cellular respiration
c)
energy pyramid
d)
biochemical cycle
42.
symbiotic relationship in which one organism benefits and the other organism is harmed
a)
secondary succession
b)
predation
c)
pioneer species
d)
parasitism
43.
anything that an organism needs to live, ex. food, water, space
a)
carrying capacity
b)
resource
c)
succession
d)
denitrification
44.
largest number of individuals of a population that the environment can support
a)
carrying capacity
b)
primary succession
c)
denitrification
d)
mutualism
45.
a relationship between two in which one species, the predator, feeds on the other species, the prey
a)
chemosynthesis
b)
predation
c)
cellular respiration
d)
commensalism
46.
symbiotic relationship in which one organisms benefits and the other organism is not affected
a)
invasive (non-native) species
b)
mutualism
c)
nitrogen fixation
d)
commensalism
47.
symbiotic relationship in which both organisms benefit
a)
competition
b)
Mutualism
c)
nitrogen fixation
d)
energy pyramid
48.
Step in the food chain, food web, or ecological pyramid
a)
trophic Level
b)
abiotic factors
c)
community
d)
ecosystem
49.
A large area that has a specific type of climate and certain types of plant and animal communities
a)
ecosystem
b)
habitat
c)
niche
d)
biome
50.
Network of all food in an ecosystem
a)
ecology
b)
food web
c)
decomposer
d)
food chain
51.
Study of interactions between organisms and their environment
a)
niche
b)
community
c)
ecology
d)
ecosystem
52.
Where an organism lives
a)
habitat
b)
niche
c)
heterotrogh
d)
biosphere
53.
Non-living factor that affects an ecosystem
a)
biotic factor
b)
abiotic factor
c)
food chain
d)
biome
54.
Consumer that eats plants
a)
heterotroph
b)
herbivore
c)
producer
d)
community
55.
Living factors or organisms that affect an ecosystem
a)
abiotic factors
b)
species
c)
trophic level
d)
biotic factors
56.
Organisms that makes its own food using sunlight or chemicals; producer
a)
decomposer
b)
autotroph
c)
heterotroph
d)
herbivore
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