Question # 1

Point out the FALSE statement about respiration.

Choose an answer

Gases can easily pass through the walls of the alveoli

Gas exchange in lungs is very efficient because lungs provide large surface area

In emphysema, the walls of alveoli break and there is more surface area.

Dust particles can damage the lung by irritating the inner alveoli surface.

Where does the gaseous exchange occur in humans?

Choose an answer

Pharynx

Trachea

Bronchi

Alveoli

In plants, gaseous exchange takes place as:

Choose an answer

CO2 is removed and O2 is absorbed

CO2 is absorbed and O2 is removed

CO2 and O2 both are absorbed

CO2 and O2 both are removed

Most of the gaseous exchange in a leaf occurs through:

Choose an answer

Stomata

General surface

Cuticle

Lenticels

The major cause of lungs cancer is:

Choose an answer

nicotine

smoking

viral infection

radiation

In normal condition human respiration rate is:

Choose an answer

12 to 15 per minute

15 to 12 per minute

10 to 12 per minute

16 to 20 per minute

A cough, mild wheezing, fever chills and shortness of breath are symptoms of:

Choose an answer

Emphysema

Pneumonia

Bronchitis

Asthma

A disease involving the breakdown of air sacs of the lungs is:

Choose an answer

Bronchitis

emphysemsa

pneumonia

asthma

What type of blood vessels surrounds the alveoli?

Choose an answer

Artery

Arteriole

Capillary

Vein

The structural and functional unit of lungs is:

Choose an answer

trachea

pharynx

broncioles

alveolus

What happens during Exhalation?

Choose an answer

Ribs muscles relax

Diaphragm become dome shaped

Pressure on lungs increased

All of these

Smoking may also lead to the cancers in:

Choose an answer

Kidneys and pancreas

Oral cavity and larynx

Breast and bladder

All of them

What percentage of oxygen inhaled form air during breathing?

Choose an answer

21%

22%

23%

24%

In human which process occurs in alveoli?

Choose an answer

Tranport

Nutition

Gaseous Exchange

Reproduction

More Classes

Other Links

10th Class Biology Chapter 10 Gases Exchange English Medium KPK Boards Online Mcqs MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer