Breathing and Exchange of Gases MCQ

Breathing and Exchange of Gases MCQ/Objective questions Chapter 17 Biology

Exchange of gases in earthworm takes place through

• a. Cuticle
• b. Tracheal tubules
• c. Gills
• d. Lungs

Answer

a. Cuticle

Coelontrates, sponges, flatworms and other lower vertebrates exchange gases through

• a. Cuticle
• b. Tracheal tubules
• c. Gills
• d. Body surface

Answer

d. Body surface

Which organ aquatic arthropuds and molluscs use to exchange gases?

• a. Cuticle
• b. Tracheal tubules
• c. Gills
• d. Body surface

Answer

c. Gills

A surfactant that prevents collapsing of alveoli is

• a. Pectin
• b. Lecithin
• c. Cellulose
• d. None

Answer

b. Lecithin

‘c’ shaped ring that prevent collapse of tracea is made up of

• a. Elastic cartilage
• b. Hyaline cartilage
• c. Fibrous cartilage
• d. None

Answer

b. Hyaline cartlage

Air passes into trachea from pharynx via

• a. Mouth
• b. Larynx
• c. Epiglottis
• d. None

Answer

b. Larynx

Cartilaginous box which helps in sound production is

• a. Mouth
• b. Lung
• c. Pharynx
• d. Larynx

Answer

d. Larynx

Thin sac like vascularised structure present in the lungs is

• a. Tracheole
• b. Branchiole
• c. Alveoli
• d. trachea

Answer

c. Aleveoli

Lung is surrounded by pleural membrane which contains:

• a. Water
• b. Pleural fluid
• c. Air
• d. None

Answer

Cardiac notch is present in

• a. Right lung
• b. Left lung
• c. Both lungs
• d. None

Answer

b. Left lung

Which tissue makes the alevoli of lungs?

• a. Simple squamous
• b. Simple cuboidal
• c. Simple columnar
• d. None

Answer

a. Simple squamous

 

The amount that we breathe in or breath out during natural breathing is

• a. Expiratory Reserve Volume (ERV)
• b. Inspiratory Reserve Volume (IRV)
• c. Tidal Volume (TV)
• d. Vital capacity (VC)

Answer

c. Tidal Volume (TV)

Volume remain in the lungs after forceful expiration is:

• a. TV
• b. VC
• c. Reserve volume (RV)
• d. Function Residual Capacity (FRC)

Answer

c. Reserve volume (RV)

Total lung capacity is

• a. Vital capacity + Reserve capacity
• b. Vital capacity – Reserve capacity
• c. Tidal volume + Reserve volume + Inspiratory reserve volume
• d. None

Answer

a. Vital capacity + Resserve capacity

The only vein that carry oxygenated blood is

• a. Renal vein
• b. Hepatic vein
• c. Pulmonary vein
• d. None

Answer

c. Plumonary vein

The only artery that carries impure/deoxygenated blood is:

• a. Renal artery
• b. Sinusoidal artery
• c. Pulmonary artery
• d. None

Answer

c. Pulmonary artery

Which molecule among these have higher affinity for haemoglobin

• a. CO2
• b. O2
• c. CO
• d. All   three

Answer

c. CO

Respiratory rhythem centre in brain which regulate rate of respiration is a part of:

• a. Cerebrum
• b. Cerebellum
• c. Medulla oblongata
• d. None

Answer

c. Medulla oblongata

A region in pons which regulate respiratory rhythemcentre is

• a. Chemotriggerzone
• b. Pneumotaxis center
• c. Hypothalamus
• d. None

Answer

b. Pneumotaxis centre

Promininet cause of emphysema is

• a. Malnutrition
• b. Poor hygiene
• c. Cigarette smoking
• d. Adverse drug reaction

Answer

c. Cigarette smoking

Read also:

Digestion and Absorption MCQ

Plant Growth and Development MCQ

Respiration in Plants MCQ

Photosynthesis in Higher Plants MCQ

Breathing and Exchange of Gases MCQ/Objective questions Chapter 16 Biology

Ref: Chapter 17.