WorksheetsEcology 2 - Exam Review
Total questions: 12
Worksheet time: 7mins
Name
Class
Date
1.
The ultimate energy source for most ecosystems on Earth is
a)
heterotrophic producers
b)
the sun
c)
soil nutrients
d)
nucleic acids
2.
Feeding levels or energy levels within ecosystems are called
a)
nutrient levels
b)
endergonic webs
c)
ecotones
d)
trophic levels
3.
The trophic level that usually contains the greatest numbers of organisms is
a)
primary consumers
b)
secondary consumers
c)
producers
d)
tertiary consumers
4.
A network of interacting feeding patterns is called a(n)
a)
food chain
b)
food web
c)
ecological pyramid
d)
food pyramid
5.
A population is a group of
a)
all of the living and non-living things in an area
b)
all of the organisms of the same species in an area
c)
all of the living things in an area
d)
none of these
6.
As you move up an ecological pyramid (from bottom to top), each trophic level has
a)
less energy and more organisms
b)
less energy and fewer organisms
c)
more energy and fewer organisms
d)
all of these
7.
When an organism consumer another organism, what happens to most of the energy?
a)
It gets stored as fat
b)
It gets lost as heat
c)
It gets used in photosynthesis
d)
It gets transferred to quaternary consumers
8.
Which of the following explains what happens to energy as it is transferred through feeding levels?
a)
10% of organisms can make their own food through photosynthesis
b)
10% of energy gets lost as heat between trophic levels
c)
10% of energy can be passed on to the next trophic level
d)
90% of energy is stored as fat
9.
The bladderwrack is a type of brown kelp-like algae that converts carbon dioxide and water into food using sunlight. This makes the bladderwrack a(n)
a)
heterotroph
b)
primary consumer
c)
producer
d)
decomposer
10.
Food chains do not usually exist in nature. Why not?
a)
Organisms are not always confined to one trophic level
b)
Decomposers will only get nutrients from the highest consumers
c)
Not all consumers are heterotrophs
d)
All of these are correct
11.
The total amount of living tissue in a trophic level is called
a)
bioweight
b)
biomass
c)
biomagnification
d)
biosphere
12.
A tapeworm living in the intestine of a dog is an example of a symbiotic relationship in which one organism benefits (the tapeworm) and the other is harmed (the dog). This would be an example of
a)
mutualism
b)
commensalism
c)
parasitism
d)
predation
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