Quiz 2 Flashcards

1
Q

What characteristics of fish allow them to perform rapid acceleration?

A

A deep body shape with a large caudal fin

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2
Q

Which organisms are most likely to feed on sinking particulate organic matter (POM)

A

Deep sea zooplankton

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3
Q

What causes large-scale migration patterns in species like blue whales

A

Tracking shifting food resources such as krill

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4
Q

Which of the following is a primary feeding strategy for basking sharks

A

Suspension feeding by swimming with an open mouth

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5
Q

Which of the following factors does not contribute to plankton patchiness

A

Ocean acidity levels

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6
Q

Which group of marine organisms can actively swim against ocean currents

A

Nekton

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7
Q

What advantage does the chambered nautilus have for regulating buoyancy?

A

Gas-filled chambers within its shell

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8
Q

Which environmental condition most likely triggers a second smaller phytoplankton bloom in autumn?

A

Resurfacing of nutrients due to fall storms

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9
Q

Which of the following is an example of nekton

A

Tuna

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10
Q

What is the key adaptation that allows copepods to detect mates?

A

Chemoreceptors on their first antennae

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11
Q

What distinguishes nekton from other marine organisms like plankton?

A

Nektons can actively swim against currents

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12
Q

Which organism is most likely to cause a phytoplankton bloom in high-latitude waters?

A

Diatoms

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13
Q

Which sensory adaptations allow some marine animals, like sharks, to detect electrical signals from prey?

A

Electroreceptors

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14
Q

How do lipids help copepods survive in deep waters?

A

They serve as a food reserve

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15
Q

How do oceanic fish like tuna manage long-distance migrations?

A

By using ocean currents and favorable feeding zones

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16
Q

Why are coccolithophores significant in the context of climate change?

A

They help regulate carbon dioxide levels in the ocean

17
Q

What causes marine snow to form in the water column

A

Decaying organic matter and exopolymers

18
Q

How does grazing by zooplankton influence the phytoplankton population?

A

It reduces phytoplankton abundance after a bloom

19
Q

How does iron limitation affect phytoplankton growth in certain ocean regions?

A

It limits the ability to fix nitrogen grow

20
Q

What role do copepods play in the spring phytoplankton bloom?

A

They gaze on phytoplankton and regulate growth

21
Q

Which environmental factor is most important in determining the depth of phytoplankton blooms?

A

Light Intensity

22
Q

Which characteristics is unique to cartilaginous fish such as sharks

A

They have an oil-filled liver that helps with bouyancy

23
Q

What role do acoustic signals play in studying marine biology?

A

Measuring plankton patch and size distribution

24
Q

What is the function of has-filled sacs in organisms like the Portuguese man-of-war?

A

To regulate buoyancy

25
Q

What is the primary function of the cuttlebone in cuttlefish?

A

regulate buoyancy

25
Q

Why do nektonic cephalopods like squid need to regulate gas content in their bodies

A

To maintain neutral buoyancy at different depths

26
Q

Why is nitrogen considered a limiting nutrient in many parts of the ocean

A

It cycles very slowly between organisms

27
Q

What adaptation helps deep-sea fish maintain buoyancy

A

swimbladder

28
Q

What is the role of marine snow in the ocean ecosystem?

A

it transports organic material to deeper waters

29
Q

How do fish optimize oxygen absorption from the water?

A

Countercurrent Exchange System