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प्रश्न
Give suitable explanation for the following :
Why does a person feel breathlessness at higher altitudes?
उत्तर
At higher altitudes, the oxygen content of the air is low. So, a person feels breathlessness at higher altitudes.
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संबंधित प्रश्न
What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.
Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
Trace the movement of oxygenated blood in the body.
Name one substance which is produced in anaerobic respiration by an organism but not in aerobic respiration.
Name the areas in a woody stem through which respiratory exchange of gases takes place.
Name two animals which breathe through gills.
Name the red pigment which carries oxygen in blood.
Fill in the following blank with suitable word:
Gills are the breathing organs in ___________.
Explain why, it is dangerous to inhale air containing carbon monoxide.
Draw a labelled diagram of the human respiratory system.
"Respiration is a vital function of the body". Justify this statements.
Which of the following increases in muscle cells when they are lacking in oxygen?
The two organisms which breath only through their moist skin are:
The breathing and respiration in woody stem of a plant takes place through:
When a person breathes in the air, the air enters into his body through an organ A having two holes B in it. The air then passes through the pharynx and larynx and enters into tube C. The tube C divides into two smaller tubes D at its lower end. The two smaller tubes are attached to two respiratory organs E. Each smaller tube divides inside the organs E to form a large number of still smaller tubes called F. The smallest tubes F have air-sacs G at their ends in which gaseous exchange takes place in the body of the person. What are A, B, C, D, E, F, and G?
An animal in which the oxygenation of blood does not take place in the lungs is:
Choose the odd one out in the following groups of four items each:
Trachea, Bronchus, Alveolus, Diaphragm
Choose the odd one out in the following groups of four items each:
Diffusion, Respiratory gases, Alveoli, Capillary network
Name the body structure concerned with the given functional activity:
Protects the lungs from mechanical injury
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Mitochondria and _____________.
State one function of the following:
Mitochondria
Match the items in Column A with those in Column B.
|
Column A |
Column B |
|
Cartilaginous |
Epiglottis |
|
Large surface area |
Diaphragm |
|
Breathing movements |
Bronchi |
|
Voice |
Alveoli |
|
Complemental air |
Larynx |
|
Swallowing |
Extra inhalation |
Why is respiration essential for life?
____________ is necessary for the respiration in plant.
Lack of oxygen in muscles often leads to cramps among cricketers. This results due to:
Which is the correct sequence of air passage during inhalation?
Yeast is used in wine and beer industries because it respires
Match the correct answers with the type of respiration and respiratory substances.
| Respiration | Types of Substrates |
| A. Floating respiration | I. Proteins |
| B. Cytoplasmic respiration | II. Glucose |
| C. Protoplasmic respiration | III. Carbohydrates and fats |
