Q 01/05

What do most monkeys have that apes lack?

A) Larger brain size

B) Presence of a tail

C) Bipedal locomotion

D) Lack of opposable thumbs

Answer · why

B) Presence of a tail

The Old World monkey family name literally means 'tailed ape'; the apes are the tailless ones.

Q 02/05

Roughly what share of primate species are threatened with extinction?

A) 15%

B) 35%

C) 60%

D) 90%

Answer · why

C) 60%

Deforestation, forest fragmentation and hunting for medicine, pets and food are the common threats.

Q 03/05

Which of these primate groups is classified as an Old World monkey?

A) Marmoset

B) Langur

C) Spider Monkey

D) Squirrel Monkey

Answer · why

B) Langur

Langurs belong to the leaf-eating subfamily Colobinae, which has 61 species in 11 genera.

Q 04/05

Which of the following is an example of a New World monkey species?

A) Baboon

B) Mandrill

C) Colobus

D) Titi

Answer · why

D) Titi

Titis belong to the family Pitheciidae alongside sakis and uakaris, a group of 41 species.

Q 05/05

On which continent are most New World monkey species primarily found?

A) Africa

B) South America

C) Australia

D) Asia

Answer · why

B) South America

They descend from African simians and are found in tropical regions from Mexico southwards.