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प्रश्न
Fill in the following blank with suitable word:
The actual exchange of gases takes place in the ___________ of the lungs.
उत्तर
The actual exchange of gases takes place in the alveoli of the lungs.
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संबंधित प्रश्न
What are the different ways in which glucose is oxidized to provide energy in various organisms?
The exchange of respiratory gases in the cells of plants occurs by the process of _______________
(a) Osmosis
(b) Diffusion
(c) Glycolysis
(d) exhalation
Name the pores in a leaf through which respiratory exchange of gases takes place.
Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.
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 organism X having breathing organs A lives on land. When organism X goes underwater, it cannot survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of the water, it dies after a short while. A third organism Z having breathing organs C and D which lives on the banks of ponds, lakes, and rivers can survive on land as well as in water equally well.
(a) What could organism X be? Name the breathing organs A.
(b) What could organism Y be? Name the breathing organs B.
(c) What could organism Z be? Name the breathing organs C and D.
(d) Out of X, Y, and Z, which organism is (i) amphibian, (ii) aquatic, and (iii)
terrestrial?
In the lungs what substance is removed from the body?
Out of xylem and phloem, which one carries materials only upwards?
Choose the odd one out in the following groups of four items each:
Ethyl alcohol, Carbon dioxide, Starch, Oxygen
What is the normal percentage composition of gases in inspired and expired air respectively?
State one function of the following:
Intercostal muscles
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 |
Give Suitable Explanation for the Following :
Why do you shiver and why do your teeth chatter when it is very cold in winter?
With regard to the respiratory system and the process of respiration in man, answer the following question:
What is meant by :
- Residual air and
- Dead air space
Answer the following question.
A gas is released during photosynthesis. Name the gas and also state the way by which the gas is evolved.
Complete the analogy.
Transport of CO2 by plasma : 7% :: Transport of CO2 by bicarbonate ions: ____________.
____________ is necessary for the respiration in plant.
Glycolysis process occurs in which part of the cell?
During respiration exchange of gases take place in
Mark the following statement as True or False. Correct the false statement.
Insects have spiracles on the lower surface of the body.
