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प्रश्न
Why is respiration essential for life?
उत्तर
Respiration is essential for life as energy produced during this process is utilized by the organisms to carry out various biological activities.
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संबंधित प्रश्न
State whether the statement is true or false:
Aquatic animals breathe at a slower rate than the terrestrial animals.
If a plant is releasing carbon dioxide and taking in oxygen during the day, does it mean that there is no photosynthesis occurring? Justify your answer.
Where in the lungs does gas exchange take place?
What is the other name of wind-pipe?
State whether the following statement is true or false:
Energy can be produced in cells without oxygen.
Fill in the following blank with suitable word:
The organs of respiration in man are the _____________.
Explain why, a land plant may die if its roots remain waterlogged for a long time.
Name the type of respiration in which the end product is:
Lactic acid
Give one example where such a respiration can occur.
State the three common features of all the respiratory organs like skin, gills and lungs.
Draw a labelled diagram of the human respiratory system.
Why do the walls of trachea not collapse when there is less air in it?
"Respiration is a vital function of the body". Justify this statements.
Which of the following is correct for the process of anaerobic respiration?
| Carbon dioxide always produced | A lot of energy released | |
| (a) | No | Yes |
| (b) | No | No |
| (c) | Yes | No |
| (d) | Yes | Yes |
Which of the following is known as the energy currency of the cells in biology?
Some sugar solution is taken in a test-tube and a little of substance X in powder form is added to it. The mouth of test-tube is closed with a cork and allowed to stand for sometime. On opening the cork, a characteristic smell of substance Y is obtained and a gas Z is also observed to be formed. The gas Z extinguishes a burning matchstick.
(a) What could be (i) X, (ii) Y, and (iii) Z?
(b) What is the process of converting sugar into substance Y by the action of X known as?
(c) What type of respiration is exhibited by X in the above process?
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?
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?
Veins and arteries carry blood. Which of these carry blood back to the heart?
Name the body structure concerned with the given functional activity:
Prevents food from entering the trachea during swallowing.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
Epiglottis and _____________.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
'C' shaped cartilage rings and ____________.
State one function of the following:
Ciliated epithelium lining the respiratory tract
State one function of the following:
Intercostal muscles
State one function of the following:
Pleural fluid
Answer the following question.
In the experimental set up to show that "CO2 is given out during respiration", name the substance taken in the small test tube kept in the conical flask. State its function and the consequence of its use.
Draw a diagram of the human respiratory system and label - pharynx, trachea, lungs, diaphragm and alveolar sac on it.
What is the ppCO2 in alveolar air?
______ refers to the physical process by which gaseous exchange takes place between the atmosphere and the lungs.
Which is the correct sequence of air passage during inhalation?
