During heavy exercise the breathing rate of a person slows down.

True

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False

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Solution

The correct option is B False
During exercise, the muscle cells need more oxygen to sustain their work This results in an increase in breathing and heart rate because both the lungs and the heart work extra to keep up with the ever growing need of oxygen.

The lungs absorb more oxygen and the muscle cells receive more blood and thus the oxygen demand is satisfied.
Therefore this statement is false.

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Similar questions

Question 7 (i)
Mark ‘T’ if the statement is true and ‘F’ if it is false:
(i) During heavy exercise, the breathing rate of a person slows down.

Q. During heavy exercise, the breathing rate can increase upto ........... per minute.

Mark ‘T’ if the statement is true and ‘F’ if it is false:

(i) During heavy exercise the breathing rate of a person slows down. (T/F)

(ii) Plants carry out photosynthesis only during the day and respiration only at night. (T/F)

(iii) Frogs breathe through their skins as well as their lungs. (T/F)

(iv) The fishes have lungs for respiration. (T/F)

(v) The size of the chest cavity increases during inhalation. (T/F)

State whether the following statements are true or false. Justify your statement. [5 MARKS]
(1) During heavy exercise, the breathing rate of a person slows down.
(2) Plants carry out photosynthesis only during the day and respiration only at night.
(3) Frogs breathe through their skin as well as their lungs.
(4) At high altitudes, the lower air pressure makes it more difficult for oxygen to enter our respiratory systems.
(5) Glucose breaks down into lactic acid in the absence of oxygen.

State whether the following statements are true/ false .Give the explanation for each statement to support your answer. [5 MARKS]
(1) During heavy exercise the breathing rate of a person slows down.
(2) Plants carry out photosynthesis only during the day and respiration only at night.
(3) Frogs breathe through their skins as well as their lungs.
(4) The amount of air available on the mountains is more than that available on the ground.
(5) Glucose breaks down into lactic acid in the absence of oxygen.

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