Primate reltives and adaptations

Question 1

Aye aye

Answer 1

A long thin middle finger used as a tool, large fixed occiptials, prognathic face.

Question 2

Gelada

Answer 2

Grazing monkeys that spend a large amount of time sat on their rump and so unlike other babboons and drills they have brightly coloured chests to compete for mates and show off. Large canines, social conhesion maintained by grooming.

Question 3

Celebes crested macaque

Answer 3

Brow ridge, small gene pool at this point where they wont recover.

Question 4

Mandrill

Answer 4

Brightly coloured zygomatic ridges, large canines that must be at least 3inches long before the females will consider mating, no tails as they are foragers and have no need for them.

Question 5

Proboscis monkey

Answer 5

Large nose and ruff for disply purposes.

Question 6

Siamang

Answer 6

Brachiate through the trees, no thumbs to aid in swinging. Large vocal pouch to allow for long calls through the forest.

Question 7

Tarsier

Answer 7

Large occipitals which take up large anounts of their brain case, grasping hands, only primate to be a carnivoire, imobile eyes.

Question 8

Tonkin snub nose money

Answer 8

No nose, water vapour is more easily absorbed, they sneeze when it rains.

Question 9

Bold Uakari

Answer 9

Red face for displays, thick fur, arboreal.

Question 10

Detail the three main ways of primate locomotion

Answer 10

Terrestrial, suspensory and arboreal.

Question 11

Detail the anatomical adaptations of primates

Answer 11

Pentadactyl limbs
Prehensile hands
Sensitive tactile pads 
Finger nails 
Opposable hallux
Tails

Question 12

The general features of the skull

Answer 12

Visual senses are highly developed
Eyes are large and forward facing 
Enclosed orbits 
Post orbital bar
Dental forumla: 2,1,2,3
Brain cases are large

Question 13

Mating systems

Answer 13

Promiscuity - Many
Polygny - 1 male with many females
Polyandry - 1 female with many males
Monogamy - one to one