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.

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

2.

The Mexican bays and lagoons of San Ignacio, Guerrero Negro and Magdalena are world-famous breeding grounds for:

Humpback whales

Blue whales

Sperm whales

Gray whales

3.

Why is a stranded cetacean in a highly life-threatening condition?

Because it cannot breathe

Because its body design was not conceived by Nature to fully cope with gravity out of the water

Because it cannot efficiently dissipate heat on land (overheating)

Because it quickly gets dehydrated and its skin is also sensitive to the ultraviolet radiations of the sun

4.

Which of the following places are known to be summerly feeding grounds for migrating whales?

Tonga

The Bering Sea

Maldives

Antarctica

5.

Which of the following countries has formalised a moral opposition to whaling and prohibits killing and harassing of cetaceans to its citizens anywhere in the world?

Australia

Japan

Norway

Iceland

6.

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

The Common dolphin

The Bryde's whale

The Dugong

The Minke whale

7.

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

Gray whale

Narwhal

Common dolphin

Vaquita

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.

Which of the following cetaceans are only found in the Gulf of California (Sea of Cortez)?

Gray whale (Eschrichtius robustus)

Boto (Inia geoffrensis)

Vaquita (Phocoena sinus)

Dall's porpoise (Phocoenoides dalli)

10.

The number of blowholes in Mysticeti is:

Two

One or two, depending on the species

One

Always two, except for the Bowhead whale which has only one