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प्रश्न
Give suitable explanation for the following :
Why does a person feel breathlessness at higher altitudes?
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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
Carbon dioxide enters into the leaves through tiny pores present on the surface of the leaf called _________.
(a) chlorophyll
(b) chloroplast
(c) stomata
(d) epidermis
How are oxygen and carbon dioxide transported in human beings?
Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
The mountaineers carry oxygen with them because ______.
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Name one substance which is produced in anaerobic respiration by an organism but not in aerobic respiration.
Fill in the following blank with suitable word:
Gills are the breathing organs in ___________.
Name the type of respiration in which the end product is:
Lactic acid
Give one example where such a respiration can occur.
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Leaves
Name the energy currency in the living organisms. When and where is it produced?
The photosynthesis in a plant is not taking place during the day time if the plant is releasing:
Which of the following is most likely to have a much higher breathing rate?
With which human organ system (or human systems) is alveoli associated?
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Tick the most appropriate answer.
The products of respiration are :
State one function of the following:
Intercostal muscles
Give Suitable Explanation for the Following :
Why do you shiver and why do your teeth chatter when it is very cold in winter?
Why is respiration essential for life?
Glycolysis process occurs in which part of the cell?
Breathing is a process that
- provides O2 to the body.
- breaks down food to release energy.
- helps the body to get rid of CO2.
- produces water in the cells.
Which of the following gives the correct combination of functions of breathing?
