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Biology
Quarter 3 Post-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.a)
Identify what components of an ecosystem are not part of a community.
A.
B.
C.
D.
Biotic factors
Ferns
Abiotic factors
Beetles
3. (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.
4. (6.b)
What are the factors that affect population growth?
A.
B.
C.
D.
Physical environment
Food source
Predators
All of the above
1
Biology
Quarter 3 Post-Test
5. (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.
6. (6.c)
An example of population fluctuation through the introduction of a nonnative population species is ______________.
A.
B.
C.
D.
increase in hummingbird population.
added horses to a herd.
an increase in the rabbit population.
adding crocodiles in the Colorado river.
7. (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
8. (6.d)
What is the process by which materials pass between the nonliving
environment and living organisms?
A.
B.
C.
D.
Biochemical cycle
Energy pyramid
Food web
Primary succession
2
Biology
Quarter 3 Post-Test
9. (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.
10. (6.e)
What organisms act as producers for the community that lives at the
surface of the ocean sea?
A.
B.
C.
D.
Jelly fish
Marsh plants
Plankton
Sea birds
11. (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.
12. (6.f)
What percentage of energy is transferred from one trophic level to the
next?
A.
B.
C.
D.
90%
50%
25%
10%
3
Biology
Quarter 3 Post-Test
13. (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.
14. (7.a)
How do most multicellular eukaryotes form specialized reproductive cells?
A.
B.
C.
D.
Binary fission
Fragmentation
Meiosis
Mitosis
15. (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.
4
Biology
Quarter 3 Post-Test
16. (7.b)
Refer to the diagram.
Pea Plant Cross
?
?
Tt
tt
Tt
tt
What genotypic ratio is expected in the offspring of this cross?
A.
B.
C.
D.
1Tt : 1tt
1Tt : 3tt
1TT : 1tt
3Tt : 1tt
17. (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.
18. (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.
5
Biology
Quarter 3 Post-Test
19. (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.
20. (8.a)
What caused the change in the finch’s beaks as seen in the Grant’s study?
A.
B.
C.
D.
Larger birds.
Water supply.
Food supply.
Number of offspring.
21. (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.
22. (8.b)
Speciation takes place as a result of all of the below, except ____________.
A.
B.
C.
D.
natural selection.
separate populations become distinct.
varying conditions (environmental pressure).
pollution.
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Biology
Quarter 3 Post-Test
23. (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.
24. (8.c)
Genetic drift will ______________.
A.
B.
C.
D.
increase population size.
promote the survival of tigers with beneficial traits.
reduce genetic diversity.
promote genetic diversity.
25. (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.
26. (8.d)
Why do we find certain people pretty or handsome?
A.
B.
C.
D.
They were born on a sunny day.
Inherited from both parents.
Eating a balanced diet.
Low genetic diversity in the initial population.
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Biology
Quarter 3 Post-Test
27. (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
28. (8.e)
When we see fossils of organisms that no longer exist, we are referring to
_______________.
A.
B.
C.
D.
biological diversity.
episodic speciation.
mass extinction.
dramatic variation.
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Biology
Quarter 3 Post-Test
Answer Sheet
Question Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Correct Answer
B
C
B
D
A
C
D
A
A
C
A
D
A
C
A
A
A
C
B
C
D
D
D
C
A
B
D
C
9
Standard
6.a
6.a
6.b
6.b
6.c
6.c
6.d
6.a
6.e
6.e
6.f
6.f
7.a
7.a
7.b
7.b
7.c
7.d
8.a
8.a
8.b
8.b
8.c
8.c
8.d
8.d
8.e
8.e