Compare the terms in the tables by defining them side by side.
habitat
niche
abiotic factor
biotic factor
symbiosis
commensalism
mutualism
parasitism
predation
The Biosphere
I found this information
on page _________.
Sequence the abiotic and biotic factors. Write abiotic or biotic in each square.
1. lack of
rainfall
2. dry soil
__________________
____________________
4. rivers
dry up
____________________
Levels of
Organization
3. certain
plants die
__________________
_
5. animals do
not reproduce
____________________
6. the population of
a species diminishes
______________________
Identify each level of organization that is described.
____________________ all members of the same species living in a certain area
I found this information
____________________ interacting populations
on page _________.
____________________ an individual living thing made up of cells
____________________ all the populations in a community and their abiotic
surroundings
____________________ an area that has a certain climate, plant life and animal life
1
Community
Interactions
I found this information
Rephrase mutualism, commensalism and parasitism in your own words. Provide an
an example of each term.
1. __________________________________________________________________
on page _________.
_________________________________________________________________________
2. __________________________________________________________________
__________________________________________________________________
3. __________________________________________________________________
__________________________________________________________________
Section 2.2
Flow of Energy in an Ecosystem
Scan Section 2 of Chapter 2. Make a list of ways in which organisms obtain energy.
____________________________________________________________________
____________________________________________________________________
Use your book to define energy. Then name the ultimate source of energy for Earth.
____________________________________________________________________
Use your book to fill in vocabulary terms in this paragraph about food chains.
autotroph
biomass
carnivore
decomposer
detrotivore
food chain
In a ______________, matter and energy move from ________________ to
________________ to _____________. A food chain is made of many steps; each
organism in the food chain represents a step called a ____________________. An
________________ is a heterotroph that eats only plants, whereas a ____________
preys on other heterotrophs. An _______________ eats both plants and animals.
food web
nutrients are returned to the soil, air and water by ______________. A model that
herbivore
shows all possible feeding relationships at each trophic level is call a ____________.
heterotroph
omnivore
If you were a scientist and you wanted to determine the weight of living matter at a
certain trophic level, you would measure the _______________.
trophic level
2
Energy in an
Ecosystem
I found this information
on page ________.
Summarize three ways that organisms get energy by completing the table.
Type of
Organism
Other
name(s) for
this type
Autotrophs
consumers, herbivores,
carnivores, scavengers,
omnivores
no other
name
1.
Food comes
from
2.
3.
The organisms that are
eaten are turned into
energy and molecules
for the consumer’s body
Chemical
reactions that
occur
Examples
Design your own three-step example of the flow of energy.
Classify each of the following organisms as an autotroph or a heterotroph. Put an A
in front of the autotrophs and an H in front of the heterotrophs.
Models of Energy
Flow
I found this information
___ 1. alligator
___ 4. whale
___ 7. daffodil
___ 10. rabbit
___ 2. squirrel
___ 5. moss
___ 8. rhinoceros
___ 11. tomato
___ 3. maple tree
___ 6. tiger
___ 9. dandelion
___ 12. cockroach
Contrast a food chain with a food web. ______________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
on page _______.
State 3 things that an ecological pyramid shows that food webs and food chains do not.
______________________________________________________________________
______________________________________________________________________
______________________________________________________________________
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