Lab 9

Question 1

elephants order

Answer 1

proboscidea

Question 2

hyraxes

Answer 2

hyracoidea

Question 3

sirenians (manatees)

Answer 3

sirenia

Question 4

what tooth is the tusk made from in elephants?

Answer 4

incisor

Question 5

what 3 families are in perisoodactyla?

what limb structure do they have?

Answer 5

1. equidae
2. Rhinocerotidae
3. Tapiridae

–> Mesaxonic

Question 6

what is the canine tooth used for in equidae? M and F?

Answer 6

linked to testosterone in males

Question 7

what family, suborder, and order are camels in?

Answer 7

Camelidae, Tylopoda, Artiodactyla

Question 8

metapodials of __ and __ digit are fused to form ___ in camels?

Answer 8

3rd and 4th digit = cannon bone

Question 9

what families are contained in suiformes?

Answer 9

suidae
tayassuidae
hippopotamidae

Question 10

what order, suborder has baleen? why?

Answer 10

cetacea
mysticeti
- filter feeding

Question 11

toothed whales

order, suborder

Answer 11

cetacea

odontoceti

Question 12

what are cetacea more closely related to?

Answer 12

artiodactyla

Question 13

what is the closest relative of cetacea?

Answer 13

hippo

Question 14

what anatomical changes have cetacea undergone?

Answer 14

-front limbs are modified flippers
-vestigial hips
-many bones replaced by cartilage
- no external ear
- high O2 exchange in lungs
sotres O2 in muscles