Question 1

What reproductive benefit is obtained by the polygynous sexual habits of many marine mammals, such as elephant seals?

Accepted Answer

In nature, reproductive output is usuall

Question 2

Dolphins have a beak whereas porpoises have a rounded blunt head.

Accepted Answer

A) True 
 B)False

Question 3

Bubble nets for confusing and trapping plankton are produced by:

Accepted Answer

A)  gray whales. 
B)  humpback whales. 
C)  minke whales. 
D)  sperm whales. 
E)  dolphins. 
A)  gray whales. 
B)  humpback whales. 
C)  minke whales. 
D)  sperm whales. 
E)  dolphins.

Question 4

Match the insulation with the closely associated animal.
-Sea Otter

Accepted Answer

A) Fur 
B) Fur and fat 
C) Blubber 
A) Fur 
B) Fur and fat 
C) Blubber

Question 5

Match the purpose with the mechanism it is most closely associated with.
-Strong sonar pulse

Accepted Answer

A) locate prey 
B) trap prey near surface 
C) filter feed 
A) locate prey 
B) trap prey near surface 
C) filter feed

Question 6

Match the location with the species.
-Dungong dugon

Accepted Answer

A) southeastern United States 
B) South America 
C) Africa 
D) Indo-pacific 
A) southeastern United States 
B) South America 
C) Africa 
D) Indo-pacific

Question 7

Sea lions and seals belong to the suborder:

Accepted Answer

A)  Carnivora. 
B)  Sirenia. 
C)  Cetacea. 
D)  Pinnipedia. 
E)  Odontoceti. 
A)  Carnivora. 
B)  Sirenia. 
C)  Cetacea. 
D)  Pinnipedia. 
E)  Odontoceti.

Question 8

Which of the following species is endangered

Accepted Answer

A)  California sea lion 
B)  northern fur seal 
C)  Steller's sea lion 
D)  both a and b 
A)  California sea lion 
B)  northern fur seal 
C)  Steller's sea lion 
D)  both a and b

Question 9

The sirenians

Accepted Answer

A)  rest on shore. 
B)  bear young on land. 
C)  are completely aquatic. 
D)  are fish eaters. 
E)  don't have blubber since they live in tropical water 
A)  rest on shore. 
B)  bear young on land. 
C)  are completely aquatic. 
D)  are fish eaters. 
E)  don't have blubber since they live in tropical water

Question 10

Why must sea otters consume 25% of their body weight in food every day?

Accepted Answer

This is most likely the result

Question 11

The milk of cetaceans is very rich in:

Accepted Answer

A)  fat. 
B)  protein. 
C)  carbohydrates. 
D)  cellulose. 
E)  DNA. 
A)  fat. 
B)  protein. 
C)  carbohydrates. 
D)  cellulose. 
E)  DNA.

Question 12

A group of whales is called a

Accepted Answer

A)  harem. 
B)  pod. 
C)  covey. 
D)  herd. 
E)  bevy. 
A)  harem. 
B)  pod. 
C)  covey. 
D)  herd. 
E)  bevy.

Question 13

Match the possible importance of a whale behavior with its most closely associated behavior.
-Tail Cocking

Accepted Answer

A) marking a position 
B) unknown 
C) aggressive behavior 
A) marking a position 
B) unknown 
C) aggressive behavior

Question 14

Compare sirenians and cetaceans, describing 4 ways that they are similar.

Accepted Answer

Sirenians share many similar c

Question 15

Match the food item with the animal that consumes it.
-Baleen Whales

Accepted Answer

A) vegetation 
B) plankton 
C) fish, squid 
A) vegetation 
B) plankton 
C) fish, squid

Question 16

Match the possible importance of a whale behavior with its most closely associated behavior.
-Breaching

Accepted Answer

A) establishing dominance 
B) marking position 
C) looking around 
A) establishing dominance 
B) marking position 
C) looking around

Question 17

Through evolution, the hindlimbs of cetaceans have been modified, eventually becoming

Accepted Answer

A)  flippers. 
B)  tail. 
C)  non-existent. 
D)  flukes. 
E)  enlarged. 
A)  flippers. 
B)  tail. 
C)  non-existent. 
D)  flukes. 
E)  enlarged.

Question 18

All the following are all major points of the article Where Have the Steller's Sea Lions Gone except:

Accepted Answer

A)  Some biologists thought commercial fishing was culprit. 
B)  Killer whales may play a role in pinniped population regulation. 
C)  Scientific views undergo revision with new data and findings. 
D)  Scientists often come to contradictory conclusions when examining the same phenomenon. 
E)  Steller's sea lions decimated the salmon population in Alaska. 
A)  Some biologists thought commercial fishing was culprit. 
B)  Killer whales may play a role in pinniped population regulation. 
C)  Scientific views undergo revision with new data and findings. 
D)  Scientists often come to contradictory conclusions when examining the same phenomenon. 
E)  Steller's sea lions decimated the salmon population in Alaska.

Question 19

To reduce drag whales have eliminated

Accepted Answer

A)  external ears. 
B)  pectoral fins. 
C)  external appendages. 
D)  mammary glands. 
E)  flukes. 
A)  external ears. 
B)  pectoral fins. 
C)  external appendages. 
D)  mammary glands. 
E)  flukes.

Question 20

Match the population characteristic with the species.
-Eastern Pacific Gray Whale

Accepted Answer

A) endangered 
B) extinct 
C) population size 1.8 million 
D) population size 22,000 
A) endangered 
B) extinct 
C) population size 1.8 million 
D) population size 22,000

What reproductive benefit is obtained by the polygynous sexual habits of many marine mammals, such as elephant seals?

Dolphins have a beak whereas porpoises have a rounded blunt head.

Bubble nets for confusing and trapping plankton are produced by:

Match the insulation with the closely associated animal. -Sea Otter

Match the purpose with the mechanism it is most closely associated with. -Strong sonar pulse

Match the location with the species. -Dungong dugon

Sea lions and seals belong to the suborder:

Which of the following species is endangered

The sirenians

Why must sea otters consume 25% of their body weight in food every day?

The milk of cetaceans is very rich in:

A group of whales is called a

Match the possible importance of a whale behavior with its most closely associated behavior. -Tail Cocking

Compare sirenians and cetaceans, describing 4 ways that they are similar.

Match the food item with the animal that consumes it. -Baleen Whales

Match the possible importance of a whale behavior with its most closely associated behavior. -Breaching

Through evolution, the hindlimbs of cetaceans have been modified, eventually becoming

All the following are all major points of the article Where Have the Steller's Sea Lions Gone except:

To reduce drag whales have eliminated

Match the population characteristic with the species. -Eastern Pacific Gray Whale

Science and Marine Biology

Fundamentals of Ecology

Geology of the Ocean

Water, Waves, and Tides

Biological Concepts

Marine Microbes

Multicellular Primary Producers

Lower Invertebrates

Higher Invertebrates

Marine Fishes

Reptiles and Birds

Intertidal Communities

Estuaries

Coral Reef Communities

Continental Shelves and Neritic Zone

The Open Sea

Life in the Oceans Depths

Harvesting the Oceans Resources

Oceans in Jeopardy

Filters

Exam 12: Marine Mammals

What reproductive benefit is obtained by the polygynous sexual habits of many marine mammals, such as elephant seals?

Dolphins have a beak whereas porpoises have a rounded blunt head.

Bubble nets for confusing and trapping plankton are produced by:

Match the insulation with the closely associated animal. -Sea Otter

Match the purpose with the mechanism it is most closely associated with. -Strong sonar pulse

Match the location with the species. -Dungong dugon

Sea lions and seals belong to the suborder:

Which of the following species is endangered

The sirenians

Why must sea otters consume 25% of their body weight in food every day?

The milk of cetaceans is very rich in:

A group of whales is called a

Match the possible importance of a whale behavior with its most closely associated behavior. -Tail Cocking

Compare sirenians and cetaceans, describing 4 ways that they are similar.

Match the food item with the animal that consumes it. -Baleen Whales

Match the possible importance of a whale behavior with its most closely associated behavior. -Breaching

Through evolution, the hindlimbs of cetaceans have been modified, eventually becoming

All the following are all major points of the article Where Have the Steller's Sea Lions Gone except:

To reduce drag whales have eliminated

Match the population characteristic with the species. -Eastern Pacific Gray Whale

Science and Marine Biology

Fundamentals of Ecology

Geology of the Ocean

Water, Waves, and Tides

Biological Concepts

Marine Microbes

Multicellular Primary Producers

Lower Invertebrates

Higher Invertebrates

Marine Fishes

Reptiles and Birds

Intertidal Communities

Estuaries

Coral Reef Communities

Continental Shelves and Neritic Zone

The Open Sea

Life in the Oceans Depths

Harvesting the Oceans Resources

Oceans in Jeopardy

Filters