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Biology
Quarter 3 Pre-Test
1. (6.a)
What term describes the variety of organisms, their genetic differences, the
communities, and ecosystems in which they occur?
A.
B.
C.
D.
Succession
Biodiversity
Biochemical Cycle
Climate
2. (6.b)
How would the food web be affected if plants were eliminated?
A.
B.
C.
D.
Herbivores would become carnivores.
The food web would collapse.
The herbivores would disappear.
Nothing would happen.
3. (6.c)
A three fold increase in the number of coyotes in a region would result in
____________.
A.
B.
C.
D.
a decrease in the size of a population of it’s prey.
an increase in the size of a population of it’s prey.
no increase or decrease in the population of it’s prey.
none of the above.
4. (6.d)
Carbon atoms return to the pool of carbon dioxide in the air and water by
__________.
A.
B.
C.
D.
respiration.
combustion.
erosion.
all of the above
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Biology
Quarter 3 Pre-Test
5. (6.e)
What part do decomposers play in the stability of an ecosystem?
A. They release nutrients back into the environment to be used by other
organisms.
B. They produce bacteria and fungi.
C. They produce energy storing molecules.
D. They create biodiversity.
6. (6.f)
The energy pyramid is a representation of ___________.
A.
B.
C.
D.
the flow of energy through ecosystems.
the transfer of energy through ecosystems.
the different organisms in an ecosystems.
lost energy.
7. (7.a)
What is an example of a Phenotype with a correct allele?
A.
B.
C.
D.
C – Rabbit with fully colored coat.
C – Himalayan rabbit: White with dark eartips, nose, paws, and tails.
Cc – Albino Rabbit.
C – Rabbit with light gray coat.
8. (7.b)
The mutated allele that causes Sickle Cell Anemia is ______________?
A.
B.
C.
D.
a recessive allele that causes a red blood cell in shape of a sickle.
sex linked and dominant white blood cell.
sex linked and dominant red blood cell.
autosomal and dominant white blood cell.
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Biology
Quarter 3 Pre-Test
9. (7.c)
Why do new mutations occur in a gene pool?
A.
B.
C.
D.
For survival of the species.
Variety is the spice of life.
They don’t change.
All of the above.
10. (7.d)
Variations within a species ____________.
A. decreases a population.
B. is threatening to the survival of a species.
C. increases the likelihood that at least some members of a species will
survive.
D. creates too much competition for the survival of the species.
11. (8.a)
According to Darwin, natural selection effects the rate of reproduction
when __________.
A.
B.
C.
D.
individuals eat lots of junk food.
they have physical or behavioral traits.
individuals are born with very large cranials.
you live below the equator.
12. (8.b)
Which is not an element of natural selection?
A.
B.
C.
D.
Genetic variation.
Environmental challenges to reproduce.
Overproduction of offspring and a struggle for survival.
Multi-racial.
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Biology
Quarter 3 Pre-Test
13. (8.c)
What is genetic drift?
A.
B.
C.
D.
Movement of species.
Destruction of habitat.
Landslide.
Reduction in population size by a natural disaster.
14. (8.d)
Evolution is _______________.
A. the result of genetic changes that occurs in constantly changing
environment.
B. the result of genetic stability that occurs in the environment.
C. the difference in reproductive rates.
D. the low genetic diversity in the initial population.
15. (8.e)
By analyzing rocks in which fossils are found, we can see the following
other environmental factors.
A.
B.
C.
D.
Flooding
Erathquakes
Meteor strikes
All of the above
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Biology
Quarter 3 Pre-Test
Answer Sheet
Question Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Correct Answer
B
B
A
D
A
A
A
A
A
C
B
D
D
A
D
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Standard
6.a
6.b
6.c
6.d
6.e
6.f
7.a
7.b
7.c
7.d
8.a
8.b
8.c
8.d
8.e