Chapter 5 Part 2

Question 1

2 Major traits that distinguish birds

Answer 1

Flight skeleton (thin bone) and Feathers (lift/conserve heat)

Question 2

Adaptions that enable birds for demands of flight

Answer 2

lightened bones, endothermy (warm blooded), efficient respit. and circ. syst., high metabolic rate, modified vertebral column

Question 3

First animals were thought to be

Answer 3

tiny, shrew-like, insect eating, tree dwelling creatures

Question 4

Mammal Characteristics

Answer 4

hair/mammary glands, sebaceous glands, 3 middle-ear bones, lower jaw is 1 bone, specialized teeth, Anucleate red blood cells

Question 5

3 groups of Mammalia

Answer 5

Monotremes, Marsupials (Metatheria), Placentals (Eutheria)

Question 6

Fossils of therapod dinos found with

Answer 6

feather-like structures

Question 7

No asymmetrical feathers needed for

Answer 7

flight

Question 8

Some fossils had claws, used to climb trees and then…

Answer 8

glide down

Question 9

Feathers provide…

Answer 9

insulation, water repellency, camouflage/used for balance, running, courtship

Question 10

Monotremes examples:

Answer 10

duck-billed platypus, echidnas

Question 11

Marsupial examples:

Answer 11

kangaroos, opossum, sugar glider

Question 12

Placental Mammal examples:

Answer 12

deer, skunk, elephant monkey, manatee

Question 13

Which mammal group are most widespread/provide young w/nourishment?

Answer 13

Placental Mammals

Question 14

Which mammal group where young born in early development/finish developing in pouch?

Answer 14

Marsupials

Question 15

Other name for Marsupials-

Answer 15

Metatheria

Question 16

Other name for Placentals-

Answer 16

Eutheria