The mesopelagic zone refers to the ocean depths in which there is:
A) Enough light to support plant growth.
B) No light at all.
C) Dim light,but not enough for plant growth.
D) Enough light for primary production by bacteria.
E) Dim light,but enough to support only some hardy plants.
Correct Answer:
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Q9: The mesopelagic zone extends from about 200
Q10: A chambered nautilus is a species of.
A)Cnidarian.
B)Bathyopelagic
Q11: The deep-sea benthos consists mostly of:
A)Deposit feeders.
B)Filter
Q12: Which of these groups of planktonic organisms
Q13: Pheromones are special chemicals that are used
Q15: The water below the oxygen minimum layer
Q16: The zone immediately below the bathyalpelegic zone
Q17: Deep-sea pelagic fishes are characterized by all
Q18: The presence of bioluminescent organs on the
Q19: Photophores are:
A)Specialized eyes.
B)Buoyancy-regulating organs.
C)Specialized jaws.
D)Light-sensitive organs that
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