Week 9

Question 1

!Rodentia distribution

Answer 1

Worldwide except:

Antarctica and New Zealand

Question 2

!Rodentia skull morphology

Answer 2

Pterygoid region is well developed (for muscles moving lower jaw - for gnawing)
Zygomatic arch is complete
Paroccipital process and auditory bullae enlarged

Question 3

Rodentia dentition

Answer 3

Adapted for gnawing:
1 upper and 1 lower pair of incisors
Diastema

Question 4

Rodentia incisors

Answer 4

Open rooted
Lacks enamel to make it chisel like/self sharpening
Lips can be closed behind incisors to prevent dirt entering mouth

Question 5

!Rodentia morphology

Answer 5

Duplex uterus
Baculum (penis bone in males)
Testes internal

Question 6

!Rodentia economic importance

Answer 6

Fur
Meat
Research/lab animals
Pets

Question 7

!Rodentia human interaction

Answer 7

Rodents can cause agricultural and forestry damage.
They can be zoonotic disease vectors
They can cause structural damage

Question 8

!Lagamorph diet

Answer 8

Herbivores:

Grasses, leaves, and bark

Question 9

Family leporidae (in lagamorph) skull morphology

Answer 9

Maxilla has a honeycomb structure with many holes

Question 10

Family leporidae (in lagamorph) post-cranial skeleton

Answer 10

Adaptations for Cursorial lifestyle:

Greatly elongated hindlimbs & bounding gait.

Question 11

!Family leporidae (in lagamorph) human interaction

Answer 11

Hunted for meat and hides.
Rabbits as pets
Rabbits as research animals
Some considered crop pests

Question 12

Family Ochotonidae (in family lagomorphs) unique characteristic

Answer 12

Pikas have a high body temp which makes them adapted for cold environments and means that they don’t have to hibernate.

Question 13

!Family Ochotonidae (in family lagomorphs) distribution

Answer 13

North America and north Asia (cold areas)

Question 14

Family Ochotonidae (in family lagomorphs) skull morphology

Answer 14

Maxilla has a honeycomb structure (many small openings).