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Breathing & Gaseous Exchange

Total questions: 70

Worksheet time: 35mins

Name
Class
Date
1.

Name the gaseous exchange structure in a root.

a)

Lenticel

b)

leaves

c)

stomata

d)

Stoma

2.

Name A

a)

Stomata

b)

Guard cells

c)

Stoma

d)

Guard cell

3.

What is the role of lime water in test tube A?

a)

To absorb Carbon (IV) oxide

b)

To show that atmospheric air has low concentration of Carbon (IV) oxide.

c)

To absorb Carbon (IV) oxide from the living mammal

d)

None of the above.

4.

What observation is made in Boiling tube B

a)

Milky substance formed

b)

It rose in level

c)

It forms a white precipitate

d)

No colour change

5.

Which of the following is not true about respiratory structure?

a)

It is moist

b)

It is highly vascularized

c)

It has large surface area

d)

It is very thick

6.

Which of the following is not a characteristic of a respiratory structure?

a)

It is moist

b)

Has large surface area

c)

It is highly vascularised

d)

It is rich in mitochondria

7.

Identify the structure shown

a)

Alveoli

b)

Alveolus

c)

Villus

d)

Villi

8.

Name the gaseous exchange structure in the organism shown.

a)

Cell wall

b)

Cytoplasm

c)

Vacuole

d)

Cell membrane

9.

Identify the structure.

a)

Gills

b)

Gill filament

c)

Gill filaments

d)

Gill

10.

Identify part labelled A.

a)

Gill bar

b)

Gill rakers

c)

Gill filament

d)

Gill bars

11.

Which of the following is not true during exhalation?

a)

Diaphragm flattens

b)

External intercostal muscles relax

c)

Internal intercostal muscles contract

d)

Volume of thoracic cavity decreases

12.

Name part marked B

a)

Gill rakers

b)

Gill raker

c)

Gill bar

d)

Gill bars

13.

What does Bell jar represent in human being?

a)

Trachea

b)

Lung

c)

Rib cage

d)

Diaphragm

14.

choose the correct answers about alveolus

a)

surrounded by numerous blood capillary

b)

large surface area foe gaseous exchange

c)

thin simple cuboidal epithelium cell

d)

moist surface of a alveoli

15.

What does Balloon represent in human being?

a)

Trachea

b)

Lung

c)

Rib cage

d)

Diaphragm

16.

Which of the following is not true during inhalation?

a)

Diaphragm flattens

b)

External intercostal muscles contract

c)

Internal intercostal muscles relax

d)

Volume of thoracic cavity decreases

17.

What does glass tubing represent in human beings?

a)

Trachea

b)

Lung

c)

Rib cage

d)

Diaphgram

18.

state two function of stoma

a)

regulate gaseous exchange

b)

regulate water loss

c)

regulate the uptake of water

d)

regulate pH of plant

19.

What does rubber sheet represent in human being?

a)

Trachea

b)

Lung

c)

Rib cage

d)

Diaphragm

20.

Which of the following is not true about respiratory surfaces.

a)

They are elastic for faster diffusion

b)

They are moist to dissolve respiratory gases.

c)

They are highly vascularized to create a concentration gradient.

21.

Identify the respiratory structures of the specimen shown

a)

Operculum

b)

Gills

c)

Scales

d)

Skin

22.

Parts of plants that provide a large surface area for gaseous exchange

a)

Leaves

b)

Stems

c)

Roots

d)

Flowers

e)

Fruits

23.

Structure in leaves that allows gases to diffuse in and out of plant cells

(a)  

24.

Stoma is bounded by a pair of...

(a)  

25.

During the night

a)

Photosynthesis does not occur

b)

Water diffuse out of the cell

c)

Guard cells lose turgidity

d)

Stoma closes

26.

Oxygen diffuses from

a)

Trachea to lung

b)

Alveolus to blood capillary

c)

Blood capillary to alveolus

d)

Lung to trachea

27.

Gaseous exchange is by process of

a)

respiration

b)

diffusion

28.

Name A

a)

Trachea

b)

Lung

c)

Alveolus

d)

Blood capillary

29.

Gaseous exchange is when...

a)

O2 diffuses from the alveoli to the capillary

b)

CO2 diffuses from the alveoli to the capillary

c)

O2 diffuses from the capillary to the alveoli

d)

CO2 diffuses from the capillary to the alveoli

30.

Name B

a)

Trachea

b)

Lung

c)

Alveolus

d)

Blood capillary

31.
After the trachea, air travels through the...
a)
Bronchiole
b)
Alveoli
c)
Bronchus
d)
Capillary
32.

Blood arriving in the capillary from the body has a...

a)

Higher concentration of carbon dioxide (CO2) and a lower concentration of oxygen (O2)

b)

Higher concentration of oxygen (O2) and a lower concentration of carbon dioxide (CO2)

33.
Identify the pathway of air.
a)
nasal cavity, throat, bronchioles, bronchi, alveoli
b)
mouth, nasal cavity, bronchi, bronchioles, alveoli
c)
nasal cavity/mouth, trachea, bronchi, bronchus, alveoli
d)
nasal cavity/mouth, trachea, bronchi, bronchioles, alveoli
34.

Identify a characteristic of capillaries

a)

Thick cell wall

b)

Small lumen

c)

Contain valves to prevent backflow

d)

Selectively permeable membrane

35.

Oxygen diffuses in from

a)

A to B

b)

B to A

36.

What is gaseous exchange?

a)

The movement of Oxygen and Carbon Dioxide between the bronchi and pulmonary artery

b)

The movement of Oxygen and Carbon Dioxide between the alveoli and bloodstream

c)

The movement of Oxygen and Carbon Dioxide between the heart and lungs

d)

The movement of Oxygen and Carbon Dioxide between the nasal cavity and heart

37.
Oxygen + haemoglobin = ?
a)
oxygenated haemoglobin
b)
oxyhaemoglobin
c)
haemoglobin
d)
oxygenglobin
38.

Air arriving in the alveoli has a...

a)

Higher concentration of carbon dioxide (CO2 ) and a lower concentration of oxygen (O2 )

b)

Higher concentration of oxygen (O2 ) and a lower concentration of carbon dioxide (CO2 )

39.

Haemoglobin is present in ______________________cells.

a)

white blood cells

b)

red blood cells

c)

plasma

d)

platelets

40.

Which of the following are features of the alveoli that adapt them to gas exchange?


I. Large surface area

II. Thin walls

III. Dry surfaces

a)

I and II only

b)

I only

c)

II and III

d)

I, II, and III

41.

Name the large muscle that separates the chest cavity from the abdominal cavity and helps with breathing?

a)

Larynx

b)

Diaphragm

c)

Sternum

d)

Thorax

42.

The windpipe is also known as...

a)

Trachea

b)

Adenoid

c)

Pharynx

43.

What happens to the air pressure between the pleural muscles, when you breathe in?

a)

No difference

b)

Increases

c)

Decreases

44.

When you expire...

a)

ribs and sternum move up and out

b)

diaphragm moves down/ flattens

c)

External intercoastal muscles relax

d)

diaphragm contracts

e)

width of thorax increases

45.

Which of the following does not occur during inhalation?

a)

External intercostal muscles contracts

b)

Diaphragm contracts

c)

Ribcage relaxes

d)

Lungs expand

46.

Which of the following does not occur during exhalation?

a)

External intercostal muscles relax

b)

Diaphragm contracts

c)

Ribcage relaxes

d)

Elastic recoil of lungs

47.
When you breathe the diaphragm _______    ____ creating more space for more air.
a)
raises high
b)
raises low
c)
lifts high
d)
flattens out
48.

Flap of tissue that covers the opening to the windpipe during swallowing

a)

Pharynx

b)

Trachea

c)

Epiglottis

49.
Given the following structures:
1. larynx
2. nasal cavity
3. pharynx
4. trachea
Which of the following is the correct order that air would flow during inhalation. 
a)
1,2,3,4
b)
2,3,1,4
c)
2,1,3,4
d)
4,2,3,1 
50.

Breathing out; exhalation of breath.

a)

Inspiration

b)

Expiration

51.
Functions of the nasal cavity include which of the following? 
a)
 filtering the air 
b)
humidifying the air 
c)
trapping airborne particles
d)
all of the above
52.

The pleural linings and the fluid in-between prevent _________ during inspiration and expiration

a)

infection

b)

puncture

c)

tearing

d)

friction

53.
When the pressure in the lung is greater than atmospheric pressure:
a)
 the bronchioles are obstructed.
b)
 lung tissue has collapsed
c)
inspiration occurs.
d)
expiration occurs. 
54.

The lungs are protected from injury by

a)

Pleural Membranes

b)

Chest muscles

c)

Skin

d)

Sternum and Rib Cage

55.

These move microbes and debris up and out of the airways

a)

pharynx

b)

larynx

c)

Cilia

d)

trachea

56.

When you inhale the ribs move....

a)

Up and out

b)

Up and in

c)

Down and out

d)

Down and in

57.

Which structure shown in the diagram below contracts, causing a pressure change in the chest cavity during breathing?

a)

A

b)

B

c)

C

d)

D

58.

The membrane that covers the lungs is called ...

a)

Thick membrane

b)

Cell membrane

c)

Skin Membrane

d)

Pleural Membrane

59.

There are several factors that affect lung capacity below, except...

a)

Age

b)

Gender

c)

Food Consumption

d)

Weight and Height

60.
When the diaphragm contracts...
a)
the volume of the thoracic cavity increases and the pressure decreases, causing air to rush into the lungs.
b)
the volume of the thoracic cavity decreases and the pressure increases causing air to rush out of the lungs. 
61.

How does an increase in lung volume lead to air entering the lungs?

a)

Produces higher pressure

b)

Produces lower pressure

62.
What muscles are used in breathing in and breathing out?
a)
diaphragm and intercostals
b)
diaphragm and lungs
c)
lungs and ribs
d)
lungs and diaphragm
63.

Which of the following will cause faster rate of breathing?

a)

reading a story book

b)

dancing

64.

What is another name for the voice-box?

a)

Trachea

b)

Oesophagus

c)

Bronchus

d)

Larynx

65.

What substance goes milky if CO2 is present?

a)

Limewater

b)

Hydrocholric acid

c)

Blood

d)

Sodium Hydroxide

66.

Which term describes the pumping of air to the respiratory surface to replace the air that is already present.

a)

gas exchange

b)

digestion

c)

ventilation

d)

circulation

67.

What keeps the trachea open?

a)

Cartilage

b)

Bone

c)

Tendons

d)

Muscle

68.

Which of the following is NOT a processe of ALL living organisms?

a)

ventilation

b)

growth

c)

metabolism

d)

respiration

69.

The thorax is made up of

a)

nasal passage, pharynx & larynx

b)

trachea, bronchi & bronchioles

c)

rib cage, lungs & trachea

d)

rib cage, intercostal muscles & diaphragm

70.

Which of the following is true for inhalation?

a)

internal intercostal muscles contract

b)

external intercostal muscles contract

c)

rib cage moves downwards and inwards

d)

rib cage move downwards and outwards

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