Lesson 6d: Birds (Avians)

Question 1

It is the unique and essential feature or hallmark of birds.

Answer 1

Feather

Question 2

The birds have a single middle ear bone, it is one of the smallest bone.

Answer 2

Stapes

Question 3

The type of bone in birds.

Answer 3

Pneumatized bones

Question 4

Other name for “wishbone” of the birds.

Answer 4

Furcula

Question 5

The finest branches of the bronchi do not terminate in alveoli but are
tube-like.

Answer 5

Parabronchi

Question 6

It is a type of hypothesis in birds where passing through tree-climbing,
leaping, parachuting, gliding, and finally powered flight.

Answer 6

Trees-down Hypothesis

Question 7

Bird with the longest wing span.

Answer 7

Albatross

Question 8

In avian reproductive organ, what side of the oviduct develops?

Answer 8

Left ovary

Question 9

Type of young in birds that are naked and helpless at birth and must be fed
in the nest for a week or more.

Answer 9

Altricial

Question 10

Unique difference of avian erythrocytes compared to mammals.

Answer 10

Nucleated and biconvex

Question 11

Type of young birds that are able to feed and run or swim as soon as they are hatched.

Answer 11

Precocial

Question 12

Basic Forms of Bird Wings

Answer 12

1. Elliptical Wings
2. High-Speed Wings
3. Soaring Wings
4. High-Lift Wings

Question 13

In birds special senses,

an inner ear has a short _______; it allows birds to hear about the same range of sound as humans.

Answer 13

cochlea

Question 14

This hypothesis is based on running birds with primitive wings to snare insects.

Answer 14

Ground-up Hypothesis

Question 15

Two hypotheses on the evolution of bird flight

Answer 15

Ground-up
Trees-down

Question 16

In avian reproductive organ, what side of the oviduct degenerate?

Answer 16

Right ovary

Question 17

In birds vision,

______ birds have more cones; _______ birds have more rods

Answer 17

Diurnal
Nocturnal

Question 18

What class are the birds?

Answer 18

Aves

Question 19

One of the smallest vertebrate endotherms

Answer 19

“bee” hummingbirds

Question 20

This provided a high pressure system that provided a oxygenated blood to capillary beds and a pulmonary circuit to serve the lungs.

Answer 20

Double circulation

Question 21

How many times do the heart of turkey, chicken, and chickadee beats?

Answer 21

93 times per minute
250 “ “ “
500 “ “ “

Question 22

The bird’s brain has a well developed ___________, __________ and __________.

Answer 22

cerebral hemispheres, cerebellum,
midbrain tectum

Question 23

Many birds have two _________ or regions of detailed vision; this provides both sharp monocular and binocular vision.

Answer 23

foveae

Question 24

Birds that must maneuver in forested habitats have ___________?

Answer 24

Elliptical Wings

Question 25

Birds that feed on the wing or make long migrations have ___________?

Answer 25

High-Speed Wings

Question 26

long arrow wings?

Answer 26

Soaring High Wings

Question 27

Wings with slotting, alulas and pronounced camber?

Answer 27

High-Lift Wings

Question 28

Single ear bone is also known as

Answer 28

stapes

Question 29

___________ are modified as wings

Answer 29

Forelimd

Question 30

________ are adapted for walking, swimming or perching

Answer 30

Hindlimbs

Question 31

5 Similarities of birds and reptiles

Answer 31

1. Both have stapes
2. Both lay similar yolked eggs
3. The lower jaw in both is composed of five or six bones.
4. Both excrete nitrogenous waste as uric acid
5. Both have skulls that abut the first neck vertebra by a single ball and socket joint

Question 32

Other term for bird red blood cells

Answer 32

erythrocytes

Question 33

Core of the cerebrum, the ___________

Answer 33

Corpus striatum

Question 34

The size of the cerebral hemisphere is directly related to the ____________ of the bird

Answer 34

intelligence

Question 35

It is where the muscle position sense, equilibrium sense, and visual cues are assembled

Answer 35

Cerebellum

Question 36

The foveae in birds provides both sharp ________ and _________ vision

Answer 36

monucular
binocular

Question 37

___________ ratio is determined by the angle of tilt and the airspeed

Answer 37

Lift-to-drag ratio

Question 38

The expanded end of the oviduct
________, receives the discharged eggs

Special glands add ______ or egg white to the egg as it passes down the oviduct

Answer 38

infundibulum

albumin