Breathing and Exchange of Gases Test

Result

Breathing and Exchange of Gases Test - 2

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Weekly Quiz Competition

Question 1
4 / -1

Which structure of man is similar to the spiracle of cockroach?

A
Nostril

B
Bronchiole

C
Lungs

D
Alveoli

Solution

Spiracle in cockroach and nostril in man are the opening through which air enter the body
Question 2
4 / -1

Which of the following options is incorrect about the larynx (sound box)?

A
It is a bony box.

B
Glottis is the opening into the larynx.

C
During swallowing of food glottis is covered by epiglottis to prevent food entry into the larynx.

D
All of these.

Solution

Larynx is a cartilaginous box containing nine pieces of cartilages.
Question 3
4 / -1

Which of the following structures close the glottis during swallowing to prevent the entry of food wind pipe

A
Tongue

B
Epiglottis

C
Diaphragm

D
Larynx

Solution

Epiglottis is a leaf shaped cartilage that closes the glottis (opening leading into tarachea) to cheak the entry of food into it during swallowing. If during eating epiglottis remains open, then food particles may center the trachea (wind pipe) lending to reflex action of couhing. This removes the food particles from traches so that breathing does not get obstructed.
Question 4
4 / -1

Read the given statements characterising certain types of animals. Select the option which correctly exemplifies each of these types.
(i) Animal having external gills.
(ii) Animal having internal gills.
(iii) An animal showing tracheal respiration.
(iv) Animal revealing buccopharyngeal respiration.

A

B

C

D

Solution

Necturus (Mud puppy, Amphibia) possesses three pairs of external gills.
Pila (Apple snail, Mollusca) respires by means of gills (ctenidium) in water and by a pulmonary sac on land.
Millipedes (Arthropoda) respire by tracheae (tracheal respiration).
Toads (Amphibia) exhibit buccopharyngeal respiration.
Question 5
4 / -1

The given figures are of human larynx, front view (i) and vertical section. (ii) Identify the labelled parts A to D.

A
(A) Glottis (B) Larynx (C) Vocal cord (D) Cartilaginous rings of trachea

B
(A) Epiglottis (B) Cartilaginous rings of trachea (C) Trachea (D) Larynx

C
(A) Glottis (B) Cartilaginous rings of trachea (C) Larynx (D) Trachea

D
(A) Epiglottis (B) Bony rings of trachea (C) Larynx (D) Trachea

Solution

In the given figure depicting the human larynx, the unidentified parts are as follows: (A) Epiglottis, (B) Cartilaginous rings of trachea, (C) Trachea, and (D) Larynx.
Question 6
4 / -1

Study the given figure of respiratory passage carefully and identify the parts labelled as A, B, C, D and E.

A
(A) Alveolar sac (B) Secondary bronchus (C) Alveoli (D) Bronchioles (E) Trachea

B
(A) Alveoli (B) Secondary bronchus (C) Alveolar sac (D) Trachea (E) Bronchioles

C
(A) Alveolar sac (B) Tertiary bronchus (C) Alveoli (D) Trachea (E) Bronchioles

D
(A) Alveoli (B) Tertiary bronchus (C) Alveolar sac (D) Bronchioles (E) Trachea

Solution

In the given figure depicting the respiratory passage in man, the unidentified parts are as follows: (A) Alveolar sac, (B) Secondary bronchus, (C) Alveoli, (D) Bronchioles, and (E) Trachea.
Question 7
4 / -1

In lungs, the air is separated from the venous blood through

A
transitional epithelium + tunica externa of blood vessel

B
squamous epithelium + endothelium of blood vessel

C
squamous epithelium + tunica media of blood vessel

D
none of these

Solution

The wall of the alveoli is very thin and has a rich network of blood capillaries. The alveolar capillary membrane consists mainly of squamous epithelium, epithelial basement membrane, a thin interstitial space, capillary basement membrane and capillary endothelium.
Question 8
4 / -1

Mammalian lungs have an enormous number of minute alveoli (air sac); This is to allow

A
more surface area for diffusion of gases

B
more space for increasing the volume of inspired air

C
more nerve supply to keep the lungs working

D
more spongy texture for keeping lung in proper shape

Solution

The number of alveoli in the human lungs has been estimated to be approximately 300 million. This enormous number of alveoli are meant to increase surface area of lungs for diffusion of gases.
Question 9
4 / -1

Lungs are enclosed in

A
perichondrium

B
pericardium

C
pleural membrane

D
peritoneum

Solution

The lungs are covered in a membrane called pleural membrane. The outer covering is called parietal pleura and the inner covering is called visceral pleura.
Question 10
4 / -1

The given figure shows the diagrammatic view of human respiratory system. Identify A, B, C and D.

A
A-Epiglottis, B-Alveoli, C-Bronchus, D-Diaphragm

B
A-Epiglottis, B-Alveoli, C-Bronchioles, D-Diaphragm

C
A-Soundbox, B-Alveoli, C-Brounchus, D-Diaphragm

D
A-Larynx, B-Alveoli, C-Brounchioles, D-Diaphragm

Solution

In the given figure depicting the human respiratory system, the unidentified parts are as follows: A-Epiglottis, B-Alveoli, C- Bronchus, D-Diaphragm.