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Flashcards in Birds And Mammals Deck (40):
1

A bird's nearly hollow bones help it to...

Be lightweight in the air

2

Birds play an important role in the environment by...

Carrying seeds to new locations

3

As a bird's wing moves forward through the air, the air pressure on the wing is...

Is less above the wing than beneath it.

4

During soaring flight, a bird

Rises on a current of warm air

5

Which characteristic is NOT common to all mammals?

They are ectotherms, cold-blooded.

6

Fur is a adaptation that allows mammals to...

Survive in cold climates.

7

What characteristic is used to classify a mammal as a monotreme, marsupial, or placental mammal?

The way their young develops

8

A mammal's gestation period is the length of time...

Between fertilization and birth

9

Birds are the only animals that have...

Feathers

10

What is the name of the upward force that enables a bird to fly?

Lift

11

Which type of flight requires the most energy?

Flapping

12

What is the function of down feathers?

To keep a bird warm

13

Some birds swallow small stones, which helps them to...

Grind food

14

Unlike most mammals, bats are able to...

Fly

15

Where do many birds store food that they are not ready to digest?

In the crop

16

The large muscle that enables mammals to breathe in and out is called the

Diaphragm

17

What are the four types of teeth mammals have?

K-9, incisors, pre-molars, & molars

18

What is the function of K-9s in most mammals?

To stab and tear food

19

What structure help birds get enough oxygen to fly?

Air sacs

20

What type of mammal lays eggs?

Monotreme

21

Want is an example of a monotreme?

Platypus, Perry.

22

What type of fish is a lamprey and hagfish?

A jawless fish

23

T or F:
All birds have hearts with four chambers.

True

24

T or F:
Birds have contour feathers that are specialized to trap heat.

False.
Down feathers keep birds warm.

25

T or F:
During flight, the air above the wing exerts less pressure than the air beneath the wing.

True

26

T or F:
All mammals are endothermic vertebrates

True

27

T or F:
Sharply pointed teeth that stab and food and cut into it are called incisors.

True

28

T or F:
Marsupials mammals are born at a later stage of development than placental mammals.

False.
Earlier because they develop in their mother's pouches.

29

T or F:
The gestation period of marsupials is usually longer than that f placental mammals

False.
Shorter because marsupials develop outside of the mother.
They develop in her pouch.

30

Birds have ............ feathers that give have to their bodies.

Contour

31

A bird's ............ squeezes and grinds food.

Gizzard

32

Birds have ........ that connect to the lungs and increases the amount of oxygen birds can take in.

Air sacs

33

A bird's two-loop circulatory system is efficient at delivering ...... to cells

Oxygen

34

A large muscle called the ....... , which is located at the bottom of the ribs, helps mammals breathe.

Diaphragm

35

The number of chambers in a mammal's heart is ...... .

Four

36

Mammals have an insulating material called ....... beneath their skins.

Blubber

37

Mammals that lay eggs are known as ....... .

Monotremes

38

A group of mammals that only has three species is the ....... .

Monotremes

39

Pregnant female monotremes and marsupials lack a ......., which is an organ that passes materials between an embryo and it's mother.

Placenta

40

Humans, monkeys, and apes belong to the group of placental mammals known as ....... .

Primates