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Test Description: Grade 6 Indicators 4,5,6,7 Grade 8 Indicators 4 , 5
Instructions: Answer all questions to get your test result.
1) Animals that reproduce sexually differ from animals that reproduce asexually in that sexually reproducing animals have
A
more genetic variation among their offspring
B
offspring that are nearly identical to their parents
C
offspring that are perfectly adapted to their parents' habitat
D
a larger number of offspring
2) When sex cells combine to produce offspring, each sex cell will contribute
A
twice the normal number of chromosomes.
B
the normal number of chromosomes.
C
half of the nomal number of chromosomes.
D
one fourth of the normal of chromosomes.
3) Single celled organisms can produce and create cells exactly like themselves without combining genes from two different parent cells. This is an example of
A
natural selection
B
gamete formation
C
asexual reproduction
D
sexual reproduction
4) Which of the following describes the advantages of asexual reproduction?
A
It increases the amount of resouces needed for a species to live.
B
it allows for more genetic diversity to be passed along.
C
It limits the spread of detrimental characteristics in a species.
D
It causes new types of species to be produced regularly
5) Salamanders can reproduce both sexually and asexually. Which is an advantage of sexual reproduction?
A
They do not need to find a mate.
B
Offspring are genetically identical to the parents.
C
New combinations of traits are produced.
D
No variations in the species will occur.
6) Sexual reproduction can cause an organism to develop a new characteristic. Which of the following new characteristics might help a lizard that lives in green, grassy areas survive
A
developing a longer tail
B
developing shorter legs
C
becoming green-colored
D
becoming colorblind
7) Cheetahs are an endangered species. Ther are fewer cheetas for mating. What genetic effects will this have on the species' chances for survival?
A
Since the cheetahs are endangered, they have no chance of survival.
B
The genetic variability will increase, increasing chances of survival.
C
The genetic variability will not change; chances of survival will not be affected.
D
The genetic variability will be limited, decreasing chances of survival.
8) According to the theory of natural selection, a species that lacks the variations necessary to adapt to a changing environment will most likely
A
fossilize
B
become dormant
C
mutate
D
become extinct
9) Rainfall in a tropical region is below average for 10 years. Which statememt best explains why insects adapted for dry conditions are now much more plentiful.
A
Insects with a high tolerance for dry conditions have migrated out of the region.
B
Natural selection has selected against insects species that are adapted for dry conditions
C
Biodiversity in the region has increased due to the dry conditions.
D
Natural selection has favored insect species with a high tolerance for dry conditions.
10) Fossils from ancient sea a shells are located in layers of rock formed out of compacted particles of sand. Why is this species of animal now extinct?
A
The species could not exsist in compacted sand.
B
The local environment changed slowly enough for other species to adapt.
C
The species was unable to adapt to environmental changes.
D
The species successfully adapted to environmental changes.
*select an answer for all questions
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