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WorksheetsScientific Method, Community and Ecosystem Ecology
Total questions: 43
Worksheet time: 42mins
Name
Class
Date
1.
This variable in an experiment is the one being deliberately changed by the scientist.
a)
dependent variable
b)
independent variable
c)
data
d)
control group
2.
This part of the experiment serves as a basis of comparison; the one variable being tested has been omitted.
a)
experimental group
b)
control group
c)
data
d)
variables
3.
A possible explanation to a problem that has not yet been tested.
a)
data
b)
theory
c)
hypothesis
d)
fact
4.
What step does every scientific experiment begin with?
a)
hypothesis
b)
question/problem
c)
procedures
d)
conclusion
5.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
6.
The summary at the end of an experiment that explains the results.
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
7.
Testing a hypothesis often involves a(n):
a)
answer
b)
experiment
c)
problem
d)
safety check
8.
A student wants to test the effects of type of exercise on heart rate. What is the dependent variable?
a)
heart rate
b)
type of exercise
c)
amount of exercise
d)
time of day exercise occurs
9.
Observations made and collected during an experiment are called:
a)
data
b)
problems
c)
conclusions
d)
questions
10.
On what axis should the independent variable always be?
a)
X
b)
Y
11.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, what are the controlled variables?
a)
Type of plant, amount of music, and sunlight
b)
Water, apple juice, milk
c)
Plant growth
12.
An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...
a)
The type of plant
b)
The amount of sunlight
c)
The type of music
d)
The type of liquid
13.
Which is NOT a step in the scientific method?
a)
Make observation
b)
Form a theory
c)
Collect data
d)
Form a hypothesis
14.
Squidward found new reeds to tryout for his clarinet. He used an APPLAUSOMETER to measure applause after playing Under the Sea with each reed. The results were put in the table.
What was the independent variable?
What was the independent variable?
a)
The Song
b)
The Reed
c)
The Applause
15.
Squidward found new reeds to tryout for his clarinet. He used an APPLAUSOMETER to measure applause after playing Under the Sea with each reed. The results were put in the table.
What was a constant?
What was a constant?
a)
The Song
b)
The Reed
c)
The Applause
16.
Squidward found new reeds to tryout for his clarinet. He used an APPLAUSOMETER to measure applause after playing Under the Sea with each reed. The results were put in the table.
What was the dependent variable?
What was the dependent variable?
a)
The Song
b)
The Reed
c)
The Applause
17.
What type of species interaction is the following: a killer whale kills and eats a seal.
a)
commensalism
b)
predation
c)
mutualism
d)
competition
18.
What type of species interaction is the following: two bears fighting over the same mate.
a)
predation
b)
mutualism
c)
competition
d)
parasitism
19.
_______ is when 2 or more species live in close association.
a)
predation
b)
competition
c)
symbiosis
d)
food web
20.
Name the species interaction: a bee and flower both benefit from their relationship.
a)
commensalism
b)
mutualism
c)
parasitism
d)
competition
21.
Name the species interaction: a mosquito feeds on human blood & transfers a disease.
a)
competition
b)
parasitism
c)
predation
d)
mutualism
22.
Name the species interaction: A decorator crab camouflages itself with sponges. Sponges are unaffected.
a)
competition
b)
predation
c)
commensalism
d)
mutualism
23.
Name the type of succession in which some life is left after a disturbance.
a)
primary sucession
b)
secondary succession
c)
tertiary succession
d)
quaternary succession
24.
Resource partitioning is best described by which of the following statements?
a)
Competitive exclusion results in the success of the superior species.
b)
Slight variation in niche allows closely related species to coexist.
c)
Two species can coevolve and share the same niche.
d)
Species diversity is maintained by switching between prey species.
25.
Character displacement has occurred if:
a)
Two species in the same habitat evolve to be more different than if they are in different habitats.
b)
One species chases the other out of the habitat they previously shared.
c)
A characteristic is lost when an organism migrates into a new area.
d)
A characteristic lost by one species is adopted by another.
26.
Primary succession would occur in an area when:
a)
Volcanic eruptions result in a surface of hardened lava.
b)
Fire wipes out all organisms in an area.
c)
A flood occurs.
d)
A forest is bulldozed by humans.
27.
A collection of organisms that belong to different populations but all live in the same area and interact with one another.
a)
Population
b)
Ecosystem
c)
Community
d)
Ecosphere
28.
The living portions of the ecosystem.
a)
Biotic factors
b)
Abiotic factors
29.
This type of symbiotic interaction involves the death of one of the interacting species
a)
Parasitism
b)
Parasitoidism
c)
Brood Parasitism
d)
Symbiosis
30.
The cuckoo bird laying eggs in a warbler nest to trick the warbler into raising the offspring is an example of ________
a)
parasitoidism
b)
brood parasitism
c)
commensialism
d)
mutualism
31.
This species is often the first to suffer when the environmental conditions begins to decline
a)
Pioneer Species
b)
Keystone Species
c)
Indicator Species
d)
Exotic Species
32.
This outcome of competition often leads to the extinction of one of the competing species
a)
Character Displacement
b)
Competitive Exclusion
c)
Resource Partitioning
d)
Brood Parasitism
33.
The species has no natural predators because it evolved in a different region than it lives in currently
a)
Keystone Species
b)
Pioneer Species
c)
Indicator Species
d)
Exotic Species
34.
The elimination of this species often leads to the collapse of an ecosystem
a)
Keystone Species
b)
Pioneer Species
c)
Indicator Species
d)
Exotic Species
35.
The diagram below shows the cycling of nutrients in an ecosystem.
The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system?
The removal of which of the following groups would cause an immediate decrease in the amount of energy flowing through the system?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Inorganic nutrients
36.
Green plants are
a)
producers
b)
consumers
c)
herbivores
d)
omnivores
37.
What is the original source of almost all energy in most ecosystems?
a)
carbohydrates
b)
sunlight
c)
water
d)
carbon
38.
What is the term for each step in the transfer of energy and matter within a biological community?
a)
energy path
b)
food web
c)
trophic level
d)
food pyramid
39.
What does a food web represent?
a)
All connections of energy flow throughout all organisms in a habitat.
b)
The specific ways that mutualism is carried out.
c)
A single pathway or energy flow between organisms.
d)
How carnivores get their food.
40.
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
41.
Organisms that breaks down and absorbs nutrients from dead organisms
a)
consumer
b)
trophic level
c)
decomposer
d)
species
42.
Use Figure 3-1. Which of the organisms illustrated above would be the top predator?
a)
zebra
b)
hyena
c)
lion
d)
cheetah
43.
The amount of energy that usually transfers from one trophic level to the next...
a)
10%
b)
20%
c)
80%
d)
50%
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