Ecosystems are made up of both living organisms and non-living things. The
picture below shows some of the living organisms and the nonliving things in a
desert ecosystem.
A.) Identify one living organism in the ecosystem.
B.) Identify one non-living thing in this ecosystem with which the living
organism you named in PART A interacts.
C.) Explain why it is important for the living organism to interact with the
nonliving thing you identified in Part B.
Question 7
7.
Suppose an oil tanker ran aground and broke apart near the mouth of the
Mississippi River and millions of gallons of crude oil and spilled out of the
ship. DESCRIBE TWO effects this would likely have on the ecosystem in the
surrounding environments.
Question 8
8.
Question 9
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Question 10
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Question 11
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Question 12
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Question 13
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Question 14
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Question 15
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Question 16
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Question 17
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Question 18
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Question 19
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Question 20
20.
An ecosystem contains organisms interacting with each other and their physical
environment. Which of these is the BEST indicator of a healthy ecosystem?
There are few decomposers.
There are many different species.
There are few herbivores.
There is a large population of only one species.
What is an abiotic factor found in a Desert Ecosystem?
cacti
sand
temperature
Both (B) and (C)
Which of the following is a biotic part of the forest?
trees
rocks
water
Both (B) and (C)
The graph below shows the number of organisms in an ecosystem over time. Which
biological concept is BEST illustrated by the graph?
natural selection.
carrying capacity.
geographic isolation.
predator-prey relationships
Consider the graph below.
Which statement below BEST explains what is occurring during section II in the
population graph?
The population is at its carrying capacity.
The population is affected by density-dependent factors.
The population is smaller than the carrying capacity.
The birth rate is exceeding the death rate.
________ is the source of energy for almost all living things.
Water
Sunlight
Food
Oxygen
Abiotic are all of the _____________ components in an ecosystem.
Living
Community
Non-living
Organism
Moose are grazing animals. They eat grass. If there were too many moose in an
area, there would probably be
fewer predators of bison
many other large grazing animals
less grass and more bare soil
tall shrubs
What is the definition of carrying capacity?
The maximum population size of a species that the environment can sustain.
The living parts of an ecosystem.
A group of interdependent organisms together with the environment they inhabit
All the plants and animals that live in the same area and interact with one
another.
The plant a ladybug lives on, the aphids that the ladybug eats, and the birds
that eat the ladybugs are all
physical factors of the environment
biotic parts of the environment
abiotic parts of the environment
involved in predator-prey relationships
When a population grows larger than its carrying capacity, limiting factors in
the environment cause the population to
increase
decrease
stay the same
co-evolve
A population that has reached the largest number of individuals that the
environment can support over a long period of time
has no limiting factors
has changed from a food chain to a food web
has reached its carrying capacity
contains only top consumers
Limiting factors such as landslides, forest fires, floods and extreme weather
are all
ways organisms compete for resources
natural disasters
predator-prey cycles
caused by ecological succession
What is an ecosystem?
A system to stop pollution
All of the biotic and abiotic factors in an area that interact with each other.
environmental factors that limit the success of a population
Largest number of individuals an ecosystem can support
Which type of succession begins with rock, which causes growth to take longer?
Primary
Secondary
Tertiary
Quatranary
Which scenario would be considered an example of Secondary Succession?
A volcano erupts causing lava to harden and leaving nothing but rock.
A forest fire breaks out burning down everything in its path but leaving soil for growth to begin again.
All of these are correct
Glaciers retreat leaving rock in order for growth to start again.
Using the energy pyramid above, which level gets the most energy directly from the producers?
Secondary Consumers
Tertiary Consumers
Primary Consumers
Producers
Using the energy pyramid above, which level would store the most energy?
