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प्रश्न
Describe the process of respiration in fish.
उत्तर
Fish have special organs for breathing. They are called gills. For breathing, the fish use the oxygen dissolved in water. They breathe by taking in water through their mouth and sending it over the gills. When water passes over the gills, the dissolved oxygen is extracted. The water then goes out through the gill slits. The extracted oxygen is absorbed by the blood and carried to all the parts of the body. The carbon dioxide produced during respiration is brought back by the blood into the gills for expelling into the surrounding water. The gaseous exchange in fish takes place in the gills.
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संबंधित प्रश्न
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
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(a) Osmosis
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(c) Glycolysis
(d) exhalation
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Match the items in Column I with the ones most appropriate in Column II. Rewrite the matching pairs.
|
Column I |
Column II |
|
(a) Alveoli |
(i) where aerobic respiration takes place |
|
(b) Bronchioles |
(ii) lined with hair |
|
(c) Nasal Chamber |
(iii) diffusion of gases |
|
(d) Bronchi |
(iv) small air tubes |
|
(v) an inverted Y shaped tube |
|
|
(vi) a common passage for food and air |
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During respiration, ____________ gas is given out.
Air that enters through the nose passes into this tube.
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- When does a person need artificial respiration?
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- From where can the person get supply of oxygen for artificial respiration?
