Statement 1: After exercising, we feel fatigue.

Statement 2: Our body undergoes anaerobic respiration and produces lactic acid.

Both statements are true. Statement 2 is the correct explanation of Statement 1.

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Both statements are true. But Statement 2 is not the correct explanation of Statement 1.

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Statement 1 is true. Statement 2 is false.

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Statement 1 is false. Statement 2 is true.

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Solution

The correct option is A
Both statements are true. Statement 2 is the correct explanation of Statement 1.

While exercising, our muscles work too fast and face lack of oxygen. Thus, they carry out anaerobic respiration that produces lactic acid along with energy. Accumulation of lactic acid is responsible for the fatigue we feel.

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Similar questions

Question 1
Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?

(a) Alcohol and lactic acid
(b) Alcohol and $C O_{2}$
(c) Lactic acid and $C O_{2}$
(d) Lactic acid only

Q. Assertion :Anaerobic respiration sometimes occurs in our skeletal muscles during strenous exercise. Reason: Pyruvic acid is reduced to lactic acid by lactate dehydrogenase in the absence of oxygen.

In anaerobic respiration, yeasts can produce alcohol from pyruvate. Imagine a situation in which we control oxygen intake and initiate anaerobic respiration in our body, can we produce alcohol in our body?

Lactic acid is produced in anaerobic respiration.

Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?

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Statement 1: After exercising, we feel fatigue. Statement 2: Our body undergoes anaerobic respiration and produces lactic acid.

Statement 1: After exercising, we feel fatigue.

Statement 2: Our body undergoes anaerobic respiration and produces lactic acid.