Transcript Organisms and Environments

Organisms and Environments
Unit Test
• 1. List and explain the three categories
(structural, behavioral and functional) into
which scientists classify adaptations.
2. Selective breeding is the deliberate breeding
of plants or animals for desired
traits. Compare and contrast natural selection
and selective breeding.
3. Which of the following is NOT an example of a
trait?
a. blue eyes
b. blonde hair
c. salamander
d. tall
• 4. Which of the following is shown in the
diagram?
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A. reproduction
B. differentiation
C. competition
D. selection
• 5. What does this sequence illustrate?
a. how selective breeding results in an
adaptation
b. how variation results in an adaptation
c. how mimicry results in variation
d. how camouflage results in variation
6. Organisms are _____ their parents.
a. different from
b. the exact same as
c. similar to
d. not at all similar to
• 7. Many algal blooms are harmless, but others can disrupt
marine ecosystems and harm organisms. How could these
algal blooms become harmful?
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• a. They release poisonous substances.
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• b. They provide too much food for other marine creatures.
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• c. They use up the oxygen while decomposing.
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• d. both a and c
8. Which is a cause of human population
decrease?
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• a. advances in agriculture
• b. medical care
• c. damage from natural disasters
• d. sewage treatment
9. In the diagram, III is a drawing of which of the
following?
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a. DNA strand
b. gene
c. cell nucleus
d. chromosome
• 10. In the picture above, which is a producer?
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a. leaves
b. scarlet macaw
c. butterfly
d. fungus
11. Producers are organisms that get energy
from which of the following?
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a. herbivores
b. omnivores
c. carnivores
d. sunlight
• 12. Samantha plants some flowers in a flower bed
and then ignores them. Soon weeds grow and the
flowers die. The weeds had been able to get
enough resources to survive, while the flowers
had not. This is an example of _____.
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• a. competition
• b. population size
• c. habitat
• d. community
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• 13. What happened from the fourth unit of time
to the eighth unit of time in the graph below?
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a. The population decreased rapidly.
b. The population remained the same.
c. The population grew rapidly.
d. The population increased and then decreased.
• 14. A monkey using a twig to hunt for ants in
an anthill would be considered which type of
adaptation?
• a. structural
• b. behavioral
• c. functional
• d. environmental
• 15. Camouflage is an example of _____.
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a. natural selection
b. selective breeding
c. behavioral adaptation
d. physical adaptation
• 16. Some populations have cooperative relationships.
This is where _____.
• a. members of the same species compete for resources
• b. members of different species compete for resources
• c. members of the same species work together for
survival
• d. members of different species work together for
survival
• 17. Which is NOT a behavioral adaptation?
• a. a plant adaptation to severe temperature by
producing seeds that are dormant
• b. seasonal movement of animals to avoid cold
• c. whales moving to warmer water to reproduce
• d. seasonal movement of animals to find food
• 18. A healthy community could have _____.
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a. only organisms that were producers
b. only organisms that were consumers
c. organisms that all had the same niche
d. a variety of producers and consumers
• 19. Which of the following is a behavioral
adaptation?
• a. blue whales migrating to mate and give birth
• b. tree frogs having long, sticky tongues
• c. alligators’ eyes being on top of their heads to
help them see above the water
• d. hedgehogs having stiff spines sticking out of
their bodies
• 20. Which of the following is NOT part of
Earth’s biosphere?
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• a. Pacific Ocean
• b. Rocky Mountains
• c. the Moon
• d. Cuba
• 21. Which of the following could be a trait of a
pine tree?
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a. furry
b. flat needles
c. pink flowers
d. red apples
• 22. Which of the following might an herbivore
eat?
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• a. a leaf
• b. a mouse
• c. a dead cow
• d. a and b
• 23. As carbon dioxide increases, the ocean’s
water becomes _____.
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• a. less acidic
• b. more acidic
• c. more saline
• d. both a and c
• 24. Gases dissolve in seawater at the ocean’s
surface. How do they get mixed into water at
deeper levels?
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a. They stay at the surface.
b. Waves mix them deeper.
c. Gravity pulls them down.
d. They are more dense than the water.
• 25. When do populations increase?
• a. When birthrates are smaller than
deathrates.
• b. When deathrates are higher than
birthrates.
• c. When birthrates are higher than deathrates.
• d. When birthrates and deathrates are equal.
• 26. Which of the following is a behavioral
adaptation?
• a. Horses run as a herd.
• b. Horses can run quickly to escape predators.
• c. Horses’ teeth can grind grass.
• d. Horses’ hooves can withstand the shock of
their bodies running.
• 27. Natural selection occurs when a
population stabilizes and the offspring
resemble the parents. Which diagram shows
the results of this process?
• 28. If there are no limiting factors, a
population can reach its _____.
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• a. competition level
• b. population potential
• c. population density
• d. biotic potential
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• 29. Which of the following might a omnivore
eat?
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a. a leaf
b. a mouse
c. a dead cow
d. a and b
• 30. What a species does in its habitat to
survive is called its _____.
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• a. ecosystem
• b. community
• c. niche
• d. population
• 31. Carrying capacity refers to the largest
_____ an environment can support.
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• a. ecosystem
• b. community
• c. population
• d. habitat
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• 32. What is the difference between a population and a community?
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• a. A population is made up of all species in an area. A community is
made up only of one species.
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• b. A population is made up of only one species. A community is
made up of all species in an area.
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• c. A population is made up of all the species and nonliving things in
an area. A community is made up of all species in an area.
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• d. The words mean the same thing.