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 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

2.

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

3.

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)

4.

Which species among the following has disappeared from the North Atlantic due to whaling?

Gray whale

Narwhal

Common dolphin

Vaquita

5.

Parental care is common to:

All animals in the sea

All vertebrates, whether on land or sea

All cetaceans and sharks

All cetaceans

6.

Which of the following cetaceans belong to the Delphinidae family?

Orca

False killer whale

Cuvier's Beaked whale

Manatee

7.

Which whale species is unique in having three ridges on the top of its head rather than only one?

Blue whale

Fin whale

Humpback whale

Bryde's whale

8.

Talking about evolution, the reason(s) why Cetaceans have almost completely lost their body hair since the time they were land mammals is (are):

Life in the ocean is so psychologically stressful

A fur is not as effective to keep a body warm in the water as it is on land

To increase streamlining

To avoid looking like seals and being hunted

9.

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

Southern Right whale

Bottlenose dolphin

Humpback whale

Dall's porpoise

10.

Resident Orcas in British Columbia are:

Fish eaters

Marine mammal eaters

Omnivorous

Filter feeders