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Chapter 7 Review
Test Description: Review
Instructions: Answer all questions to get your test result.
1) Name 4 important abiotic factors that would be found in the same ecosystem
A
Plants, soil, air, sunlight
B
Soil, temperature, organisms, air
C
Water, sunlight, soil, air
D
Water, plants, sunlight, temperature
2) What enables an organism to be able to live in a very harsh environment?
A
Its habitat
B
Its adaptations
C
Its location
D
Its nutrients
3) Why do arctic hares and jackrabbits have different appearances?
A
Because they look different
B
Because they eat different food
C
Because they live in different environments and have adapted to their environment
D
Because they have different names
4) What makes adaptations occur?
A
New adaptations occur when survival characteristics get passed along from one generation to another due to changing condition
B
Each new generation develops new adaptations
C
Only male offspring develop adaptations
D
Every other offspring will develop an adaptation
5) If a species cannot adapt to changing conditions in its environment, what will happen?
A
The species will produce larger numbers of offspring
B
The species will not be affected
C
The species numbers will increase
D
The species will begin to die, the numbers will decrease, and the species could possibly become extinct
6) What do we call an organism that gets its energy by breaking down the remains of dead organisms?
A
Consumers
B
Producers
C
Decomposers
D
Activists
7) What do food chains and food webs have in common?
A
Nothing
B
None of the above
C
Both are made of only two to three animals
D
Food chains make up food webs
8) What does a food web look like? How would you recognize one?
A
Like a sea sponge, you will see holes all over it
B
Like a spider web, you would see many food chains linked together
C
Like a snake, you will see only one food chain in a food web
D
Like a sea sponge, look to see if it is absorbent
9) Energy decreases in a pyramid as you travel to higher levels. Why?
A
Because the energy gets lost somewhere in the pyramid
B
Because the energy gets used by each organism for life processes, so there is less energy from the original source to pass on
C
Because the animals have to climb the pyramid
D
Because the energy just disappears
10) If different species with the same needs live in the same environment, what will happen?
A
They will change what they eat
B
None of the above
C
They will compete for the resources
D
They will share the resources
11) Where do animals get the nitrogen they need?
A
From soil
B
From the plants they eat or animals that have eaten plants
C
From the water
D
From the air
12) Why are photosynthesis and respiration very important parts of the carbon cycle?
A
Photosynthesis allows carbon to enter the air which allows organisms to breathe
B
Photosynthesis takes carbon out of the air process it into oxygen and releases it into the air for organisms to breathe
C
Photosynthesis is not part of the carbon cycle
D
Photosynthesis and respiration are not related to the carbon cycle
13) Explain how the amount of water in an ecosystem affects the number of organisms that can live there
A
Water does not affect the number of organisms an area can support
B
Limited water will allow a limited number of organisms to survive in that area
C
None of the above
D
Limited water allows more organisms to live in an area
14) Explain how polluting an ecosystem can change the organisms that live there.
A
Pollution only affects a small portion of ecosystems so organisms are rarely harmed
B
Pollution can change an organism’s environment, which can harm the organism
C
Pollution does not affect organisms
D
None of the above
15) How can a forest fire benefit an ecosystem that contains trees that need high heat to release seeds?
A
The fire would offer nutrients to the tree
B
It would not be beneficial; the fire would just burn down the trees
C
None of the above
D
The fire would offer the high heat the tree needs to release seeds for new trees to grow
16) Name three types of adaptations
A
Structural, behavioral, hibernation
B
Structural, behavioral, body processes
C
Behavioral, body processes, actual
D
Hibernation, structural, body processes
17) Which are three examples of structural adaptations?
A
Birds beak, rabbits ears, dogs teeth
B
Dogs teeth, bird building a nest, rabbit ears
C
Hibernation, birds beak, dogs bark
D
Birds beak, dog barking, cat meowing
18) Which are three types of behavioral adaptations?
A
Dogs teeth, birds beak, cat meow
B
Hibernation, birds beak, dogs bark
C
Cat meow, hibernation, bird building a nest
D
Bird building a nest, dog growling, cat hissing
19) Which are three types of body process adaptations?
A
Bird building a nest, dog barking, cat meowing
B
Hibernation, dog barking, bird building a nest
C
Hibernation, photosynthesis, digestion
D
Hibernation, photosynthesis, dog barking
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