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प्रश्न
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?
विकल्प
(i) and (ii)
(ii) and (iii)
(i) and (iii)
(ii) and (iv)
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उत्तर
(i) and (iii)
Explanation:
Breathing means taking in air rich in oxygen and giving out air rich in carbon dioxide with the help of respiratory organs. The taking in of oxygen-rich air into the body is called inhalation and giving out of carbon dioxide-rich air is known as exhalation.
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संबंधित प्रश्न
During respiration, the plants take CO2 and release O2.
State whether the following statement is true or false:
Fish and earthworm exchange gases during respiration in the same way.
Explain why, a land plant may die if its roots remain waterlogged for a long time.
Which of the following is not produced during anaerobic respiration in unicellular fungus?
One of the following organisms does not depend on the simple diffusion of gases for breathing and respiration. This organism is:
Consider the following chemical reactions which take place in different organisms/tissues under various conditions:
(i) Glucose → Respiration ">Ethanol + Carbon dioxide + Energy
(ii) Glucose→ Respiration ">Carbon dioxide + Water + Energy
(iii) Glucose → Respiration "> Lactic acid + Energy
(a) Name one organism which respires according to equation (i) above.
(b) Name one organism which respires according to equation (ii) above.
(c) When and where does respiration represented by equation (iii) above take place?
(d) Which equation/equations represent aerobic respiration?
(e) Which equation/equations represent anaerobic respiration?
(f) Which of the above reactions produces the maximum amount of energy?
Veins and arteries carry blood. Which of these carry blood away from the heart?
Choose the odd one out in the following groups of four items each:
Ethyl alcohol, Carbon dioxide, Starch, Oxygen
Name the body structure concerned with the given functional activity:
Protects the lungs from mechanical injury
Rewrite the following statement by selecting the correct option.
During respiration, ____________ gas is given out.
