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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 perfectly adapted to their parents' habitat
C
a larger number of offspring
D
offspring that are nearly identical to their parents
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
asexual reproduction
B
gamete formation
C
natural selection
D
sexual reproduction
4) Which of the following describes the advantages of asexual reproduction?
A
It causes new types of species to be produced regularly
B
it allows for more genetic diversity to be passed along.
C
It increases the amount of resouces needed for a species to live.
D
It limits the spread of detrimental characteristics in a species.
5) Salamanders can reproduce both sexually and asexually. Which is an advantage of sexual reproduction?
A
No variations in the species will occur.
B
New combinations of traits are produced.
C
They do not need to find a mate.
D
Offspring are genetically identical to the parents.
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
becoming green-colored
B
becoming colorblind
C
developing a longer tail
D
developing shorter legs
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 be limited, decreasing chances of survival.
C
The genetic variability will not change; chances of survival will not be affected.
D
The genetic variability will increase, increasing 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 extinct
C
become dormant
D
mutate
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
Biodiversity in the region has increased due to the dry conditions.
B
Natural selection has selected against insects species that are adapted for dry conditions
C
Insects with a high tolerance for dry conditions have migrated out of the region.
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 successfully adapted to environmental changes.
B
The species was unable to adapt to environmental changes.
C
The local environment changed slowly enough for other species to adapt.
D
The species could not exsist in compacted sand.
*select an answer for all questions
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