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.

Is Orcinus orca a toothed or a toothless cetacean?

Toothless

Toothed

Orca is not a cetacean

None of the above

2.

The Whale Shark is a shark, not a whale. It follows that:

It is not a mammal

It is a fish

It is not an air breather

It does not suckle its young

3.

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

Focusing the sounds used in echolocation

Excreting

Feeding

Mating

4.

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

5.

Cetaceans are mammals. It follows that:

They cannot be very streamlined

They lay eggs

They need to surface from time to time in order to breathe

They nourish their young with milk

6.

The so-called baleen in toothless whales (Mysticeti) serve the purpose of:

Filtering the water and retain food

Filtering the oxygen contained in the water

Chewing preys

Increasing streamlining

7.

Which of the following cetaceans can reach speeds of over 30 km/h?

Southern Right whale

Bottlenose dolphin

Humpback whale

Dall's porpoise

8.

The Pilot whale has a higher than normal rate of:

Liver diseases

Twin births

Lactic acid formation when diving longer than 15 minutes

Stranding

9.

The Gray whale was nicknamed Devilfish by whalers because:

Gray whales are naturally extremely aggressive

A Gray whale mother can become particularly aggressive if someone is harming her baby

They thought the evil would eventually get them for their practices

They regularly mistook Gray whales for Marlins

10.

Which of the following assertions about Pilot whales are true?

There are two species, one called short-finned and the other long-finned

Two different species are known, both belonging to the genus Globicephala

Two different species are known, whose distributions rarely overlap

Two different species are known, whose distributions broadly overlap