LIFE SCIENCE UNIT 5 REVIEW
INTERDEPENDENCE OF LIFE
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Attendance link: http://goo.gl/forms/WwUTFCUzH3
EXPECTATIONS
Required Class Connects
Tuesday, Wednesday, & Thursday
1:30-2:30 pm
Be active and participate in class.
Be respectful to your classmates
Be positive in the chat box and use it correctly.
Have a working microphone!
You will need it during the lessons and break out rooms.
If you have a question, please place it in the chat box and repost it if
I don’t see it.
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OBJECTIVES
 Describe ways that populations can affect ecosystems.
 Describe the relationships among organisms in a food web.
 Explain and give examples of the basic characteristics of living
organisms, including homeostasis and response to stimuli.
 Explain and give examples of competitive and cooperative
relationships among organisms.
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WHICH PHRASE DESCRIBES THE STUDY OF ECOLOGY?
A. relationships between living things and their environment
B. growth and development of organisms
C. transfer of energy in the physical world
D. comparisons between biotic and abiotic environments
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A rabbit is feeding on grass when it notices a bobcat and begins to run.
What characteristic of life is the rabbit exhibiting?
A. Homeostasis
B. Growth
C. Response to environment
D. Heredity
If we talked about the rabbit finding a mate and having little ones,
what characteristic of life would it be?
Reproduction
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WHICH IS AN EXAMPLE OF AN EXTERNAL RESPONSE TO STIMULI?
A. the body recognizing it is constantly feeling thirsty
B. a rabbit sensing a predator is approaching
C. getting water to drink to quench the body's thirst
D. a rabbit running from a predator that is chasing it
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WHICH IS AN EXAMPLE OF A RESPONSE TO A STIMULUS?
A. An increasing heart rate when blood oxygen levels drop
B. The think fur on an animal to protect it from the cold weather
C. Loss of water from the body as a result of excess sweating
D. The presence of allergens in the air
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WHAT DOES A FOOD CHAIN DIAGRAM ILLUSTRATE?
A. one pathway of feeding in an ecosystem
B. multiple pathways of feeding in an ecosystem
C. an ecosystem's water cycle
D. an ecosystem's carbon cycle
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WHICH COULD BE IN THE FOURTH TROPHIC LEVEL OF A FOOD CHAIN?
A. Rabbit
B. Earthworm
C. Bluebird
D. Grass
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WHAT PLACES ARE LIKELY TO SUPPORT A SMALL SECONDARY
CONSUMER POPULATION?
A. regions where there are climate changes
B. areas that have a small number of scavengers
C. areas that have a small number of producers
D. ecosystems that receive no sunlight
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WHICH POPULATION INCREASES THE AMOUNT OF SOIL
NUTRIENTS AVAILABLE TO PLANTS?
A. rain forest plants that grow toward the light
B. a butterfly that pollinates a flower when eating nectar
C. a dog that buries a bone in the backyard
D. earthworms that help decompose an apple that fell from a tree
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WHICH ORGANISM IS THE HERBIVORE IN THIS FOOD WEB?
A. Orca
B. Zooplankton
C. Leopard seal
D. Cod
Why is it not the cod?
Which organisms are the producers in this food web?
The marine phytoplankton.
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WHICH TERM BEST DESCRIBES THE RELATIONSHIP BETWEEN THE ORCAS
AND CRABEATER SEALS? ORGANISM IS THE HERBIVORE IN THIS FOOD WEB?
A. Competition
B. Parasitism
C. Mutualism
D. Predation
What is an other example of predation?
The leopard seals and the crabeater seals.
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WHY IS A FOOD CHAIN A MORE LIMITED REPRESENTATION OF THE
FLOW OF ENERGY THROUGH AN ECOSYSTEM THAN A FOOD WEB?
A. A food chain shows all the organisms.
B. A food chain shows only a single pathway of energy.
C. A food chain shows multiple pathways of energy.
D. A food chain has limitations with the organisms
involved.
So why is a food web a better representation of relationships within an ecosystem than a food chain?
A food web shows that most organisms consume and are consumed by more than one organism.
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WHICH FACTORS WOULD EXPLAIN THIS PATTERN AMONG
PREDATOR AND PREY POPULATIONS IN THIS AREA?
A. When the prey population decreases,
there is more food for predators.
B. When the prey population increases,
there is more food for predators.
C. When the prey population decreases,
there is less food for predators.
D. When the prey population increases,
there is less food for predators.
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WHAT HAPPENED TO THE PREDATORS IN THE MID 1950S IN
RESPONSE TO THE DECREASED PREY POPULATION?
A. The predator population decreased
and then increased.
B. The predator population sharply
decreased.
C. The predator population maintained
its population level.
D. The predator population sharply
increased.
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WHICH TERM BEST DESCRIBES THE RELATIONSHIP BETWEEN THE
FLEA AND THE MOUNTAIN LION?
A. Parasitism
B. Competition
C. Mutualism
D. Predation
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WHICH TERM BEST DESCRIBES THE RELATIONSHIP BETWEEN THE
HAWK AND THE FOX?
A.Predation
B. Parasitism
C.Competition
D.Mutualism
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IN WHICH TYPE OF ECOLOGICAL RELATIONSHIP DOES ONE ORGANISM
BENEFIT WHILE NOT HURTING OR HARMING THE OTHER?
A. competition
B. commensalism
C. mutualism
D. parasitism
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The clown fish is able to make its home in the poisonous sea anemone,
but any other fish that comes along would be paralyzed and killed. The
clown fish also seems to keep butterfly fish away from the anemone, as
they eat its tentacles.
Which term describes the relationship between the sea anemone and
the clown fish?
A. competition
B. commensalism
C. mutualism
D. parasitism
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WHICH STATEMENT DESCRIBES HOW PREDATION AND PARASITISM
ARE SIMILAR?
A. One organism is benefited and the other is not hurt or harmed
by the relationship.
B. Neither organism benefits from the association.
C.Both organisms benefit from the relationship.
D.One organism is benefited and the other is harmed by the
association.
How are mutualism and commensalism similar?
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At least one organism benefits from the relationship.
A large area dominated by characteristic
plants and animals is called a _______
Complete the concept
map by placing these
terms in the
appropriate oval in the
concept map:
abiotic
biome
As well as groups of different
species, called a __________
community
ecosystem
population
Within this are groups of individual
species, A group of one species of
organism is known as a
____________
This is made up of
__________
Which contain both
nonliving, or ________
parts…
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Complete the concept
map by placing these
terms in the
appropriate oval in the
concept map:
A large area dominated by characteristic
plants and animals is called a _biome_
This is made up of
_ecosystem_
As well as groups of different
species, called a _community_
Within this are groups of individual
species, A group of one species of
organism is known as a
_population_
Which contain both
nonliving, or _abiotic__
parts…
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BREAKOUT ROOMS
In a certain area, deer nibble on grasses and leaves of trees. Rabbits, mice, and grasshoppers feed on the
grasses. Mountain lions prey on rabbits and deer. Lizards eat many of the grasshoppers. Snakes prey on
rabbits and mice. Owls eat rabbits, lizards, and mice.Vultures scavenge dead mountain lions. Using this
information, construct a food web to trace the flow of energy through this community.
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BREAKOUT ROOMS
In a certain area, deer nibble on grasses and leaves of trees. Rabbits, mice, and grasshoppers feed on the
grasses. Mountain lions prey on rabbits and deer. Lizards eat many of the grasshoppers. Snakes prey on
rabbits and mice. Owls eat rabbits, lizards, and mice.Vultures scavenge dead mountain lions. Using this
information, construct a food web to trace the flow of energy through this community.
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STUDY ISLAND DATA BY PATHWAY
 Section 1
 Section 2
 Section 3
 Section 4
 1a 54%
 2a 45%
 3a 49%
 4a 65%
 1b 47%
 2b 40%
 3b 47.7%
 4b 56%
 1c 40%
 2c 38%
 3c 44%
 4c 51%
 1d 35%
This is the percentage of the class that has the pathway completed. You all got a K-mail yesterday that told
you how many of the 13 pathways you have completed.
Remember no matter your start date, everyone has to complete all 13 pathways.
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ASSIGNMENT
 OLS
 Part 1 – 16 questions
 Part 2 – 2 questions offline LC will grade
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