Transcript 5th Grade: Alabama Science Assessment Review

5th Grade:
Alabama Science
Assessment Review
Content Standard 9:
Describe the relationship of populations
within a habitat to various communities and
ecosystems.
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Eligible Content:
 Describe the relationships between
consumers, producers, plant eaters,
meat eaters, and plant and meat
eaters.
 Describe the relationships associated
with population, community, and
ecosystem hierarchies.
 Know the terms biotic, abiotic,
mutualism, commensalism, and
symbiosis.
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What do you need to
know to answer this
question?
What does mutualistic
mean?
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
The Rumen - this is
the largest part and
holds up to 50
gallons of partially
digested food. This is
where the 'cud'
comes from. Good
bacteria in the
Rumen helps soften
and digest the cows
food and provides
protein for the cow.
Google Images
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
Mutualism is any relationship between
two species of organisms that benefits
both species. This is the relationship
most people think of when they use the
word "symbiosis."
The sea anemone and clown
fish is an example of
mutualism.
An example of a mutualistic
relationship in which both
animals, the remora and the
shark, work together.
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What do you need to
know to answer this
question?
What does abiotic mean?
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http://www.jjanthony.com/kudzu/
Kudzu is native to Japan and China, however it grows well in
the Southeastern United States. Kudzu is a vine that when left
uncontrolled will eventually grow over almost any fixed object
in its proximity including other vegetation. Kudzu, over a
period of several years will kill trees by blocking the sunlight
and for this and other reasons many would like to find ways to
get rid of it.
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The Physical and
Chemical
components of an
ecosystem are
called the “abiotic
factors” and
include:
•The atmosphere
•Climate and water
•Soil structure and
chemistry
•Water chemistry
•Seasonality
Sunlight, an abiotic component in the
environment, provides photosynthetic
plants, which are biotic components, with
energy for them to grow and pass on the
energy to other members of the
ecosystem.
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http://jhsenvsci.wikispaces.com/2+-+Ecosystems
9
http://sciencebitz.com/?page_id=23
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Follow the arrows.
There is a
difference
between providing
energy and
receiving energy.
What do you need to
know in order to
answer this question?
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Food Web
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Mutualism:

A mutualistic relationship
requires a positive
interaction between both
species of the pair.


If the food reward is large
enough, the pollinator is
likely to go looking for
flowers of the same plant
species after it is done
visiting the flowers of the
first individual.
Google images

A flower gets its pollen
passed from one
individual to another.
In turn the flower
provides a food reward
in the form of nectar (a
sugar rich solution), or
pollen as a solid food
source.
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What does
commensalism
mean?
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


Commensalism means
literally 'at table
together'.
This is a symbiotic
relationship between two
species in which one
species benefits and the
other neither benefits or
harms.
Often, the host species
provides a home and/or
transportation for the
other species.

Commensalism:
Barnacles on whales
(barnacles benefit,
whales are
unaffected)
Vine on a tree.
Google Images
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Follow the
arrows!
no
no
no
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 The flow of energy is
transported through the
animals by a system
biologists call the food
chain.
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
Krill are at the bottom of the
food chain in Antarctica. If
they die out everything else
above them in the food chain
will be adversely affected.
Krill is a general term used
to describe about 85 species
of open-ocean crustaceans
known as euphausiids. They
are prey for myriads of
surface feeding predators
such as seabirds, squid, fish
and whales.
Google Images
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If snakes are
removed from
the food web,
then the only
food source
left for the
hawk will be
the rabbit .
Follow the
arrows from
the bottom up.
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A food chain is the
sequence of who
eats whom in a
biological
community (an
ecosystem) to
obtain nutrition.
http://www.enchantedlearning.com/subjects/foodchain/
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Click on web address for additional
practice with symbiosis.
http://www.vtaide.com/png/
symbiosis.htm
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 Good
Luck
th
5
Graders!
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