Class 10 Biology Gaseous Exchange MCQs

Welcome to our comprehensive guide on mastering gaseous exchange, an essential topic for any Class 10 Biology student. Gaseous exchange is the process by which oxygen and carbon dioxide are exchanged between an organism and its environment. This process is crucial for the survival of living beings, and therefore, it is an important concept to understand.

In this blog post, we have compiled a list of Class 10 MCQs on gaseous exchange. These MCQs cover a range of topics, including the respiratory system, breathing mechanisms, and the role of lungs in gaseous exchange. Our carefully crafted questions will help you test your knowledge, identify gaps, and enhance your exam preparation.

Gaseous Exchange MCQs

Q.1 What is the process of gaseous exchange involves?

A Breakdown ot C-H bonds to yield energy
B Physical movements that take air in and out of body
C Getting oxygen from the air and removing carbon dioxide
D Transport of oxygen by the blood to different parts of the body

Q.2 Where does most of the gaseous exchange in a leaf occur?

A Stomata
B General surface
C Cuticle
D Lenticels

Q.3 How many bronchi are there in the air passageway?

A One
B Two
C Many
D None

Q.4 Where does the gaseous exchange occur in humans?


Q.5 Which structure actively helps in taking the air out of lungs?

ANasal cavity

Q.6 The primary chemical stimulus for breathing is the concentration of:

ACarbon dioxide in blood
BOxygen in blood
CCarbon dioxide in muscles
DOxygen in muscles

Q.7 Point out the FALSE statement about respiration.

AGases can easily pass through the walls of the alveoli
BGas exchange in lungs is very efficient because lungs provide large surface area
CIn emphysema, the walls of alveoli break and there is more surface area
DDust particles can damage the lung by irritating the inner alveoli surface

Q.8 A disease involving the breakdown of air sacs of the lungs is;


Q.9 Which process does not occur in the nasal cavity?

ATrapping of large dust particles
BHumidification of the inhaled air
CWarming of the inhaled air
DExchange of gases

Q.10 What type of blood vessels surrounds the alveoli?


Q.11 In which of the following gaseous exchange occurs through stomata?


Q.12 In humans and other higher animals, the exchange of gases is carried out by:


Q.13 The length of trachea is:

A10 cm
B12 cm
C22 cm
D20 cm

Q.14 C-shaped cartilagcnous rings are present in the wall of:


Q.15 How many pairs of ribs are there in humans?


Q.16 How many lobes are present in right lung?

A 2
B 3
C 4
D 5

Q.17 Which of the following is called voice box?

A Trachea
B Larynx
C Bronchi
D Alveoli

Q.18 What is the normal breathing rate in humans?

A 10-40 times per minute
B 16-20 times per minute
C 30-40 times per minute
D None of these

Q.19 During exercise or other hard physical works, what is the maximum breathing rate that may be reached?

A 30-40 times per minute
B 50-60 times per minute
C 50 - 55 times per minute
D 60 - 70 times per minute

Q.20 Amount of oxygen in expired air is:

A 21%
B 16%
C 0.04%
D 4%

Q.21 Amount of carbon dioxide in inspired air is:

A 16%
B 0.04%
C 4%
D None

Q.22 Amount of nitrogen in expired air is:

A 70%
B 80%
C 79%
D 4%

Q.23 Cough, mild wheezing, fever, chills and shortness of breath (especially when doing hard job) are symptoms of:

A Emphysema
B Pneumonia
C Bronchitis
D Asthma

Q.24 In which of the following disease, the patient has usually lost 50% to 70% of his/her lung tissue when symptoms appears?

A Pneumonia
B Asthma
C Emphysema
D Bronchitis

Q.25 Pneumonia is an infection of:

A Kidneys
B Digestive system
C Lungs
D Blood

Q.26 Which disease is the form of allergy?

A Asthma
B Bronchitis
C Pneumonia
D Lung cancer

Q.27 When the “World No Tobacco Day” is celebrated?

A 30 June
B 31 June
C 11 January
D None

Q.28 Smoking may also lead to the cancers in:

A Kidneys and pancreas
B Oral cavity and larynx
C Breast and bladder
D All of the above

Q.29 The destruction of wall of alveoli is called:

A Pneumonia
B Emphysema
C Asthma
D Bronchitis

Q.30 The inflammation of bronchi or bronchioles is called:

A Bronchitis
B Emphysema
C Pneumonia
D Asthma