Question 1

The aphotic zone is the upper layer of the ocean where there is enough light for photosynthesis and vision.

Accepted Answer

A) True 
 B)False  False

Question 2

What do prokaryotes lack?

Accepted Answer

A) a nucleus 
B) cell walls 
C) the ability to perform photosynthesis 
D) the ability to evolve over time 
A) a nucleus 
B) cell walls 
C) the ability to perform photosynthesis 
D) the ability to evolve over time A

Question 3

Most marine organisms have the same body temperature and salinity as the surrounding environment. Why?

Accepted Answer

The great majority of marine organisms are "cod blooded," or ectothermic, having an internal temperature that stays very close to that of their surroundings. A few complex animals-- mammals and birds and some of the larger, faster fish-- are "warm blooded," or endothermic, meaning that they have a stable, high internal temperature. Because of osmosis, organisms must be isotonic with respect to salinity or water will move across cell membranes until the salt concentration on either side is the same. That could either cause cells to swell and burst or dehydrate and collapse unless counteracted.

Question 4

Explain the concept of convergent evolution using an example.

Accepted Answer

In similar conditions, multiple evolutio

Question 5

All other factors begin equal, a greater quantity of gas can dissolve in ____ seawater.

Accepted Answer

A) cold 
B) warm 
C) high salinity 
D) low salinity 
A) cold 
B) warm 
C) high salinity 
D) low salinity

Question 6

Scientists can observe primary productivity in the ocean from space by measuring the ____.

Accepted Answer

A) temperature of the surface water 
B) depth of the euphotic zone 
C) amount of chlorophyll in surface waters 
D) salinity of surface waters 
A) temperature of the surface water 
B) depth of the euphotic zone 
C) amount of chlorophyll in surface waters 
D) salinity of surface waters

Question 7

Why is the pH of ocean water more acidic in deep water?

Accepted Answer

A) More organic material is present. 
B) More carbon dioxide is present. 
C) More oxygen is present. 
D) Temperature is lower. 
A) More organic material is present. 
B) More carbon dioxide is present. 
C) More oxygen is present. 
D) Temperature is lower.

Question 8

Describe energy flow through a generalized marine trophic system.

Accepted Answer

Energy is captured through photosynthesi

Question 9

The main inorganic nutrients necessary for photosynthesis are ____.

Accepted Answer

A) carbon dioxide and carbohydrates 
B) glucose and oxygen 
C) nitrate and phosphates 
D) nitrate and carbohydrates 
A) carbon dioxide and carbohydrates 
B) glucose and oxygen 
C) nitrate and phosphates 
D) nitrate and carbohydrates

Question 10

When carbon dioxide dissolves in water, the water becomes slightly more ____.

Accepted Answer

A) acidic; its pH is higher 
B) acidic; its pH is lower 
C) alkaline; its pH is higher 
D) alkaline; its pH is lower 
A) acidic; its pH is higher 
B) acidic; its pH is lower 
C) alkaline; its pH is higher 
D) alkaline; its pH is lower

Question 11

Organisms that thrive in harsh, high temperature conditions are an example of ____.

Accepted Answer

A) extremophiles 
B) aquaphiles 
C) osmophiles 
D) halophiles 
A) extremophiles 
B) aquaphiles 
C) osmophiles 
D) halophiles

Question 12

Which of the following is an example of a primary producer?

Accepted Answer

A) phytoplankton 
B) crabs 
C) fish 
D) seals 
A) phytoplankton 
B) crabs 
C) fish 
D) seals

Question 13

Two species that both have the ability to fly must have evolved from a common ancestor.

Accepted Answer

A) True 
 B)False

Question 14

How is photosynthesis different from chemosynthesis? How are they similar?

Accepted Answer

In both photosynthesis and chemosynthesi

Question 15

The organisms that make their own food are called ____.

Accepted Answer

A) primary consumers 
B) primary producers 
C) heterotrophs 
D) secondary consumers 
A) primary consumers 
B) primary producers 
C) heterotrophs 
D) secondary consumers

Question 16

A physical or biological necessity whose presence in inappropriate amounts limits the normal action of an organism is known as a ____.

Accepted Answer

A) nutrient 
B) limiting factor 
C) trophic level 
D) scarce condition 
A) nutrient 
B) limiting factor 
C) trophic level 
D) scarce condition

Question 17

The form of autotrophy in which organic molecules are produced without using sunlight is called ____.

Accepted Answer

A) respiration 
B) chemosynthesis 
C) heterotrophy 
D) decomposition 
A) respiration 
B) chemosynthesis 
C) heterotrophy 
D) decomposition

Question 18

Asteroids hitting Earth can result in mass extinctions.

Accepted Answer

A) True 
 B)False

Question 19

Marine organisms are limited in terms of where in the ocean they can live because of the enormous amount of pressure in the deep sea.

Accepted Answer

A) True 
 B)False

Question 20

Where in the ocean is oxygen most plentiful?

Accepted Answer

A) euphotic zone 
B) aphotic zone 
C) near the seafloor 
D) disphotic zone 
A) euphotic zone 
B) aphotic zone 
C) near the seafloor 
D) disphotic zone

The aphotic zone is the upper layer of the ocean where there is enough light for photosynthesis and vision.

What do prokaryotes lack?

Most marine organisms have the same body temperature and salinity as the surrounding environment. Why?

Explain the concept of convergent evolution using an example.

All other factors begin equal, a greater quantity of gas can dissolve in ____ seawater.

Scientists can observe primary productivity in the ocean from space by measuring the ____.

Why is the pH of ocean water more acidic in deep water?

Describe energy flow through a generalized marine trophic system.

The main inorganic nutrients necessary for photosynthesis are ____.

When carbon dioxide dissolves in water, the water becomes slightly more ____.

Organisms that thrive in harsh, high temperature conditions are an example of ____.

Which of the following is an example of a primary producer?

Two species that both have the ability to fly must have evolved from a common ancestor.

How is photosynthesis different from chemosynthesis? How are they similar?

The organisms that make their own food are called ____.

A physical or biological necessity whose presence in inappropriate amounts limits the normal action of an organism is known as a ____.

The form of autotrophy in which organic molecules are produced without using sunlight is called ____.

Asteroids hitting Earth can result in mass extinctions.

Marine organisms are limited in terms of where in the ocean they can live because of the enormous amount of pressure in the deep sea.

Where in the ocean is oxygen most plentiful?

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Water

Atmospheric Circulation

Ocean Circulation

Waves

Tides

Coasts

Pelagic Communities

Benthic Communities

Uses and Abuses of the Ocean

Filters

Exam 12: Life in the Ocean

The aphotic zone is the upper layer of the ocean where there is enough light for photosynthesis and vision.

What do prokaryotes lack?

Most marine organisms have the same body temperature and salinity as the surrounding environment. Why?

Explain the concept of convergent evolution using an example.

All other factors begin equal, a greater quantity of gas can dissolve in ____ seawater.

Scientists can observe primary productivity in the ocean from space by measuring the ____.

Why is the pH of ocean water more acidic in deep water?

Describe energy flow through a generalized marine trophic system.

The main inorganic nutrients necessary for photosynthesis are ____.

When carbon dioxide dissolves in water, the water becomes slightly more ____.

Organisms that thrive in harsh, high temperature conditions are an example of ____.

Which of the following is an example of a primary producer?

Two species that both have the ability to fly must have evolved from a common ancestor.

How is photosynthesis different from chemosynthesis? How are they similar?

The organisms that make their own food are called ____.

A physical or biological necessity whose presence in inappropriate amounts limits the normal action of an organism is known as a ____.

The form of autotrophy in which organic molecules are produced without using sunlight is called ____.

Asteroids hitting Earth can result in mass extinctions.

Marine organisms are limited in terms of where in the ocean they can live because of the enormous amount of pressure in the deep sea.

Where in the ocean is oxygen most plentiful?

The Origin of the Ocean

A History of Marine Science

Earth Structure and Plate Tectonics

Ocean Basins

Ocean Sediments

Water

Atmospheric Circulation

Ocean Circulation

Waves

Tides

Coasts

Pelagic Communities

Benthic Communities

Uses and Abuses of the Ocean

Filters