CBSE Questions for Class 11 Medical Biology Breathing And Exchange Of Gases Quiz 6 - MCQExams.com

Silicosis occurs due to
  • Acid rain
  • Ozone depletion
  • Inhalation of aerosols
  • Inhalation of silica dust
While eating, hiccups are because of:
  • Spicy food
  • Food particles which enter the wind pipe
  • Food particles enter the food pipe
  • Any infection in the throat
............. is the maximum amount of air a person can expel from the lungs after a maximum inhalation.
  • Tidal air volume
  • Vital capacity
  • Complemental air volume
  • Total lung capacity
In man, expired air contains oxygen about
  • 4%
  • 10%
  • 16%
  • 20%
Bronchitis is the abnormality of
  • Liver
  • Respiratory tract
  • Kidney
  • Eyes
The disease caused by inhalation of asbestos dust is:
  • Emphysema
  • Paralysis
  • Diarrhoea
  • Dysentery
Tidal volume of air in a normal healthy man during inspiration is about
  • 300-400ml
  • 500-700ml
  • 900-1000 ml
  • 100-250ml
Nasal and oral cavities in human is separated by
  • Diaphragm
  • Palate
  • Trachea
  • None of the above
Inspiration takes place during
  • Inhalation
  • Exhalation
  • Both A and B
  • None of the above
Respiratory organ present in spider is
  • Skin
  • Book lungs
  • Lungs
  • Gills
Emphysema is a condition resulting from
  • Cigarette smoking
  • Liquor consumption
  • Drug addiction
  • None of the above
Percentage of $$O_2$$ present in inhaled air in man is about
  • 21%
  • 78%
  • 1%
  • 43%
Respiratory membrane is
  • Permeable
  • Non permeable
  • Semipermeable
  • Can be of any type
Lungs in the thoracic cavity is seperated form the abdominal cavity by means of
  • Peritonium
  • Pleura
  • Trechea
  • Diaphragum
Lungs have a large number of alveoli for 
  • Having spongy texture and proper shape
  • More surface area for diffusion of gases
  • More space for increasing volume of inspired air
  • More nerve supply
The narrowest and most numerous tubes of lungs are termed as 
  • Bronchus
  • Alveoli
  • Bronchioles
  • Hilum
Tissue respiration is a type of
  • External respiration
  • Internal respiration
  • Encretion
  • Expiration
Trachea branches to two thinner tubes called as
  • Alveoli
  • Bronchi
  • Bronchioles
  • None of the above
When diaphragm of man is completely dome shaped, it shows 
  • End of expiration and beginning of inspiration
  • Beginning of expiration and end of inspiration
  • Increased rate of breathing
  • Decreased rate of breathing
Common feature of human trachea and insect tracheae is:  
  • Noncollapsible wall
  • Supporting rings
  • Ectodermal origin
  • Endodermal origin
Volume of air inspired or expired with each normal breath is called as
  • Tidal volume.
  • Inspiratory capacity.
  • Total lung capacity.
  • Residual volume.
How many times a normal man respires per minute?
  • $$10-15$$ times
  • $$14-18$$ times
  • $$20-25$$ times
  • $$25-30$$ times
Chloride shift is concerned with the transport of 
  • $$CO_2$$ and $$O_2$$
  • $$N_2$$
  • $$CO_2$$
  • $$O_2$$
The nasal opening of human beings are equivalent to
  • Cloaca of frog
  • Blood vessels in earth worm
  • Spiracles of insects
  • Osculum of sponges
Which of these is not an organ for taking in oxygen ?
  • Lungs
  • Gills
  • Stomata
  • Atmosphere
Identify the incorrect pair from the following.
  • Pharynx- Oesophagus
  • Jejunum- Colon
  • Colon- Rectum
  • Stomach- Duodenum
In man, expired air contains oxygen about 
  • 4%
  • 10%
  • 16%
  • 20%
Tidal volume of air in a normal healthy man during inspiration is about ........... mL.
  • $$200-400$$
  • $$500-700$$
  • $$900-1000$$
  • $$1000-1250$$
Tidal volume of air in a normal healthy man during inspiration is about  
  • 300-400 ml
  • 500-700 ml
  • 900-1000 ml
  • 100-250 ml
Which among the following statement is correct?
A. Normal breathing rate of a person is 15 to 18 times per minute.
B. Total area of gas exchange seen in the whole alveoli in two lungs is 36 to 72 square metre.
C. The total volume of air breathed in an out in the cycle of inhalation and exhalation is 500 ml.
D. Wind pipe is supported by rings of cartilage in order to avoid its collapse when there is lesser air in it.
  • A, B and C
  • A, B,C and D
  • A, B and D
  • B, C and D
During inspiration, the diaphragm
  • Becomes dome-shaped
  • Flattens
  • Remains unchanged
  • Rotates sidewise
The Adam's apple is a part of which of the following laryngeal cartilage?
  • Epiglottis
  • Thyroid
  • Cricoid
  • Throat
Animals such as ............. have lungs in their chest cavities like human beings.
  • Elephants, lions
  • Cows, goats
  • Frogs, lizards, snakes, birds
  • All of these
The number of times a person breathes in ............ is termed as the breathing rate.
  • A minute
  • Two minutes
  • Four minutes
  • Three minutes
Which of these have lungs?
  • Earthworms
  • Star fishes
  • Cockroaches
  • None of the above
Which of the following bone structures protect the lungs in our body?
  • Rib cage
  • Skull
  • Vertebral column
  • All of the above
In external respiration,
  • Food is broken down and oxygen is absorbed.
  • Food is broken down and carbon dioxide is produced.
  • Oxygen is ejected and carbon dioxide is adsorbed.
  • None of the above.
Respiratory membrane should be
  • Semipermeable.
  • Non-permeable.
  • Permeable.
  • All of the above.
A scientist observed the presence of pseudostratified epithelium. What might be the organ observed by the scientist?
  • Kidney
  • Urinary bladder
  • Trachea
  • None of the above
During heavy exercise, the breathing rate can increase upto ........... per minute.
  • 35 times
  • 40 times
  • 20 times
  • 25 times
Air goes from pharynx to
  • Bronchus
  • Bronchi
  • Breochiole
  • None of the above
Which of the bone structures protects the lungs from injury in our body ?
  • Rib cage
  • Skull
  • Vertebral column
  • Pelvic bone
In our body, carbon monoxide interferes with the transport of 
  • Carbon dioxide.
  • Ammonium sulphate.
  • Oxygen.
  • Hydrogen peroxide.
The diagram below represents part of a capillary in a specific region of the human body. The region labeled X represents part of
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  • A glomerulus
  • An alveolus
  • A villus
  • The liver
Volume of air breathed in or out during normal breathing is called as
  • Vital capacity
  • Inspiratory reserve volume
  • Expiratory reserve volume
  • Tidal volume
Person living at sea level has _________ lung capacity than a person living at high altitudes. 
  • Smaller
  • Higher
  • Equal
  • None of the above
The average lung capacity is 
  • 7 litres
  • 6 litres
  • 9 litres
  • 5 litres
A person travelling from sea level to high altitudes can develop 
  • High risk sickness
  • Sea level sickness
  • Altitude sickness
  • All of the above
_________ is the volume of air inhaled in a single breath. 
  • Inspiratory volume
  • Tidal volume
  • Residual volume
  • None of the above
The rib cages move downward and inward in the .......... process.
  • Inhalation
  • Inspiration
  • Expiration
  • All of the above
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