Chapter 1 Multiple Choice Questions

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. Approximately how much of the Earth's surface does the World Ocean cover?

50% correct incorrect

60% correct incorrect

70% correct incorrect

80% correct incorrect

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. Which of the following oceans is regarded as the windiest?

The Arctic Ocean correct incorrect

The Atlantic Ocean correct incorrect

The Pacific Ocean correct incorrect

The Southern Ocean correct incorrect

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. What is the main storage compound of diatoms?

Glucose correct incorrect

Glycogen correct incorrect

Protein correct incorrect

Oil correct incorrect

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. What is the azoic hypothesis?

The proposition that there is no life around hydrothermal vents correct incorrect

The proposition that there is no life in Antarctic ice correct incorrect

The proposition that there is no life in the Dead Sea correct incorrect

The proposition that there is no life at depths greater that 600 metres correct incorrect

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. Where is a baleen found?

On the top of the head of a whale correct incorrect

Around the blow hole of a whale correct incorrect

In the mouth of a whale correct incorrect

On the tail fin of a whale correct incorrect

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. To which group do krill belong?

Crustacea correct incorrect

Molluscs correct incorrect

Annelids correct incorrect

Chordates correct incorrect

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. In which zone of the sea does the rate of photosynthesis exceed the rate of respiration in algae so that the algae can grow and reproduce?

The aphotic zone correct incorrect

The azoic zone correct incorrect

The dysphotic zone correct incorrect

The euphotic zone correct incorrect

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. Which stage of ecological succession in whale fall is characterized by sleeper sharks and hagfish?

The reef stage correct incorrect

The enrichment-opportunist stage correct incorrect

The sulfophilic stage correct incorrect

The mobile-scavenger stage correct incorrect

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. How does Riftia pachyptila, a gutless polychaete worm, obtain its nourishment?

The worm obtains nourishment by absorbing dissolved carbohydrates through its skin. correct incorrect

The worm obtains nourishment from symbiotic bacteria that use hydrogen sulfide, carbon dioxide, and oxygen. correct incorrect

The worm obtains nourishment from symbiotic photosynthesizing algae living in its tentacles. correct incorrect

The worm obtains nourishment from symbiotic bacteria that use carbon dioxide and ammonia excreted from the worm to make organic molecules. correct incorrect

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. What is marine snow?

Bits of dead organisms that fall through the water column of the ocean correct incorrect

Snow falling over the Arctic ocean correct incorrect

Snow falling over the sea correct incorrect

Broken bits of white coral falling through the water column of the ocean correct incorrect