Write True (T) or False (F) against the following statements in the given brackets:
1. Respiration is faster than combustion. ( )
2. Larynx produces sound. ( )
3. Exhaled air contains more oxygen than inhaled air. ( )
4. Exchange of gases takes place in the alveoli of lungs. ( )
5. Earthworms respire through moist skin. ( )

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Solution

1. False (F)
Respiration is slower than combustion.

2. True (T)

3. False (F)
Exhaled air contains more of carbon dioxide gas while inhaled air contains more oxygen.

4. True (T)

5. True (T)

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Similar questions

(a) Give the main points of difference between respiration in plants and respiration in animals.
(b) Describe the exchange of gases which takes place in the leaves of a plant (a) during daytime, and (b) at night.
(c) Which contains more carbon dixoide : exhaled air or inhaled air ? Why ?

Question 16
During respiration exchange of gases take place in

(a) trachea and larynx
(b) alveoli of lungs
(c) alveoli and throat
(d) throat and larynx

Q. Question 7
Mark the following statements as True or False. Correct the false statements.
(a) Oxygen breaks down glucose outside the cells of organisms.
(b) Frogs can breathe through their skin as well as lungs.
(c) Insects have spiracles on the lower surface of the body.
(d) Exhaled air has more percentage of CO₂ than inhaled air.

Q. Which of the following statement(s) is (are) true about respiration?
(i) During inhalation, ribs move inward and diaphragm is raised.
(ii) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from blood into alveolar air.
(iii) Haemoglobin has greater affinity for carbon dioxide than oxygen.
(iv) Alveoli increase surface area for exchange of gases.

Q. During the respiration in animals, the exhaled air contains percentage of carbon dioxide than inhaled air.

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1. False (F) Respiration is slower than combustion. 2. True (T) 3. False (F) Exhaled air contains more of carbon dioxide gas while inhaled air contains more oxygen. 4. True (T) 5. True (T)

1. False (F)
Respiration is slower than combustion.

2. True (T)

3. False (F)
Exhaled air contains more of carbon dioxide gas while inhaled air contains more oxygen.

4. True (T)

5. True (T)