Summer 2000 Hylobatids quiz open book (How can I write a whole quiz on gibbons? Here goes......)

1. Which one is NOT characteristic of Hominoids?

A. Coccyx instead of an external tail                         B. suspensory locomotion when in trees

C. Y-5 molar patterns                        D. Leaves are the major source of calories                E. Robust Hallux

2/3. Which TWO items are characteristic of Hylobatids?

A. Ischial callosities              B. No thumbs                        C. Live in harems                  D. male domination

E. Shortest legs relative to body of all primates                    F. Lots of sexual dimorphism of body size

G. Same sex parent forces out offspring at maturity (8 to 10 years old)

4. Which is NOT closely related to the other three?

Bonobo           Gorilla                        Chimpanzee                Orangutan

5/6. Describe four anatomical adaptations for brachiating.

7/8. Describe four ways in which siamangs are different from gibbons.

9/10. Discuss gibbon songs and vocalizations: who, when, why, what.

Name _____________________

Bonus What is ALLOMETRY?