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- 1. Multiple Choice
Organisms have all of the following in common EXCEPT
need for oxygen
need for water
need for nutrients
how they reproduce
- 2. Multiple Choice
Most sea life lives in the
sunlight zone
twilight zone
midnight zone
deep zone
- 3. Multiple Choice
What percentage of the ocean’s water is in the sunlight zone?
3%
5%
8%
15%
- 4. Multiple Choice
How much sunlight does the twilight zone get?
none at all
a lot in the summer but none in the winter
the small amount that penetrates the sunlight zone
almost as much as the sunlight zone
- 5. Multiple Choice
The deep zone includes all of the following EXCEPT
hadalpelagic zone
mesopelagic zone
bathypelagic zone
abyssopelagic zone
- 6. Multiple Choice
Which of the following is a distinguishing characteristic of the hadalpelagic zone?
It is below most of the ocean’s floor.
It is very cold.
There is no light.
There is a lot of water pressure.
- 7. Multiple Choice
What percentage of the ocean’s floor is found in the abyssopelagic zone?
50%
84%
75%
63%
- 8. Multiple Choice
What little light there is in the deep ocean is provided by
disruptions such as hurricanes
the mesopelagic zone
exceptionally sunny days
bioluminescent animals
- 9. Multiple Choice
The zones of the ocean are distinguished by their varying levels of all of the following EXCEPT
Oxygen
water
sunlight
water pressure
- 10. Multiple Choice
In the deepest zone of the ocean, water pressure is
5,850 pounds per square inch
3 tons per square inch
9,680 pounds per square inch
8 tons per square inch
- 11. Multiple Choice
How many species do marine scientists estimate have not yet been discovered in the ocean?
500,000–2,000,000
100,000–250,000
5,000,000–10,000,000
375,000–1,000,000
- 12. Multiple Choice
The example of dying coral reefs illustrates that
life in the sea is not as good at adapting as life on land is.
sometimes a species cannot adapt quickly enough to a sudden change in environment.
all species will eventually fail to adapt and die.
the coral in the reef normally has a shorter life span than other sea creatures.
- 13. Multiple Choice
Evolution is which of the following?
a set of assumptions about the earth’s atmosphere
an explanation of how organisms develop and diversify
a scientific theory that has been largely disproven
a way of explaining why organisms do not change
- 14. Multiple Choice
Natural selection is often paraphrased as
you can’t win them all
what goes around comes around
brawn over brains
survival of the fittest
- 15. Multiple Choice
Creatures that are poorly suited to the environment do not generally weaken the entire population because
they often die before they can reproduce.
the population protects its own.
populations have more weak members than strong ones.
all populations have some weak members.
- 16. Multiple Choice
Countershading is an example of
a technique used for hunting
a trait unique to sharks
the issue created by light in the ocean
an adaptation to the environment
- 17. Multiple Choice
Albinism is an example of a/an
gene
mutation
evolution
adaptation
- 18. Multiple Choice
Most plants live in the sunlight zone because
sunlight is required for photosynthesis.
there are fewer consumers in the sunlight zone.
most of the sea floor is in the sunlight zone.
plants used to live in deeper zones but have adapted.
- 19. Multiple Choice
Why are there fewer living creatures in the twilight zone than in the sunlight zone?
There is less oxygen.
The temperature varies greatly.
Most predators live in the twilight zone.
There are more plants.
- 20. Multiple Choice
In most cases, bioluminescence is useful for
producing oxygen
attracting prey
navigating dark waters
supporting plant life
- 21. Multiple Choice
All of the following traits are common in deep-sea creatures EXCEPT
large eyes
exceptional size
dorsal fins
exaggerated jaws
- 22. Multiple Choice
The role of decomposers is to
reject all organic matter.
produce food for other species
devour all organisms in an ecosystem
break down dead bodies
- 23. Multiple Choice
Population ecology considers all of the following EXCEPT
the overall health of the population of the species
how humans can completely exterminate a species if necessary
the size of the area in which the species live
what species live in a given area
- 24. Multiple Choice
Why do marine scientists often take more than one representative sample?
There are often mistakes in representative samples.
Marine scientists lack the technology to determine the population at the ocean’s depths.
There is a long tradition of taking several samples when documenting population.
Populations can vary even within the same region.
- 25. Multiple Choice
If there are 350 trout found in 200 square feet of a pond measuring 1000 square feet, what is the estimated trout population of the pond?
2000
1550
1350
1750
- 26. Multiple Choice
Rarefaction is used for which of the following?
creating a representative sample
determining which sea creatures live in an area
studying how disease impacts populations
rediscovering species thought to be extinct
- 27. Multiple Choice
Marine scientists get information about aquatic populations from which of the following sources?
commercial fishermen
news reports
helicopter pilots
individuals on the beach
- 28. Multiple Choice
Why do marine scientists examine age structure? (
It is a good sign if most of the population is very old
It provides insight into the future of the species.
It is important for determining where in a region a species lives.
It is very difficult to tell the age of sea creatures.
- 29. Multiple Choice
What does a high population density indicate?
The species is likely to face extinction.
There is no other place for that species to live.
Food supply is high and the number of predators low.
The area is being overfished.
- 30. Multiple Choice
The area in which a species lives is determined by measuring
age structure
size and weight
density
distribution
- 31. Multiple Choice
All layers of the ocean have the same amount of oxygen.
True
False
- 32. Multiple Choice
The deep zone of the ocean begins at a depth of 3,300 feet.
True
False
- 33. Multiple Choice
Isaac Newton is best known for his theories of evolution
True
False
- 34. Multiple Choice
Earth’s species have been adapting for over 4 billion years.
True
False
- 35. Multiple Choice
Temperature is constant in the bathypelagic zone
True
False
- 36. Multiple Choice
Mutations always have a negative impact on the organism.
True
False
- 37. Multiple Choice
Natural selection only occurs in sea life
True
False
- 38. Multiple Choice
Phytoplankton is the first link in the food chain.
True
False
- 39. Multiple Choice
More people have been to space than to the deepest level of the ocean
True
False
- 40. Multiple Choice
In a healthy population, there should be only young members represented
True
False
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