Fun with Quizzes

Are you a Cetacean expert?

Instructions
To pass the test you must answer correctly at least 7 questions out of 10. For each question, one or more answers can be correct and you need to select all the correct options to score a point. Test evaluation is immediate and does not require you to provide any personal data.

1.

Which of the following assertions about the Humpback whale are true?

It is the most acrobatic of all baleen whales (Mysticeti)

It only inhabits the Northern Hemisphere

It has unusually long, very distinctive flippers (pectoral fins)

Its songs (only males sing) are well known for their complexity and variety

2.

Which of the following cetaceans belong to the Delphinidae family?

Orca

False killer whale

Cuvier's Beaked whale

Manatee

3.

Is Orcinus orca a toothed or a toothless cetacean?

Toothless

Toothed

Orca is not a cetacean

None of the above

4.

What is the biggest animal that has ever lived on Earth?

The Sperm whale

The Fin whale

Some dinosaur

The Blue whale

5.

Where can Minke whales be observed?

In the Southern Hemisphere only

In both Northern and Southern Hemispheres

In the Northern Hemisphere only

It is sadly already extinct

6.

Cetaceans can keep their body warm in the water by means of:

A thick layer of proteins under their skin, called blubber

A huge production of heat, due to constant swimming

A thick layer of fat under their skin, called blubber

A special countercurrent blood-vessel system, which limits the quantity of heat lost from their flukes and flippers

7.

What is the smallest rorqual (whale with throat grooves)?

The Common dolphin

The Bryde's whale

The Dugong

The Minke whale

8.

Which of the following assertions about the Sperm whale are true?

Its blow is unique in being projected forward and on the left

It belongs to the suborder Odontoceti

It can dive as deep as 2000 metres (6000 feet)

There is an organ in its head called Spermaceti, containing huge amounts of a waxy substance (which has nothing to do with sperm, though)

9.

What is echolocation?

A natural occurring sonar system, extensively used by toothed whales

It is synonym with radar

The ability to locate a prey using natural biomagnetism

The use of electric fields to locate both preys and predators

10.

The so-called melon in Odontoceti plays a crucial role in:

Focusing the sounds used in echolocation

Excreting

Feeding

Mating