Assertion - CO2 easily diffuses from alveoli to tissues and CO2 from tissue to alveoli-Reason - Alveoli is 2-celled thick and capillaries are thin walled-A- Both A and R are true and R is the correct explanation of AB- Both A and R are true but R is not correct explanation of AC- A is true but R is falseD- A and R are false

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Standard XII

Biology

Trachea

Assertion : C...

Question

Assertion : ${CO}_{2}$ easily diffuses from alveoli to tissues and ${CO}_{2}$ from tissue to alveoli.

Reason : Alveoli is 2-celled thick and capillaries are thin walled.

Both A and R are true and R is the correct explanation of A

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Both A and R are true but R is not correct explanation of A

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A is true but R is false

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A and R are false

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Solution

The correct option is C A is true but R is false
${CO}_{2}$ easily diffuses from alveoli to tissue and vice vera because capillaries are thin walled and the alveoli are just one cell in thickness, which allows the gas exchange of respiration to take place rapidly.

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Assertion : CO2 easily diffuses from alveoli to tissues and CO2 from tissue to alveoli. Reason : Alveoli is 2-celled thick and capillaries are thin walled.

The correct option is C A is true but R is falseCO2 easily diffuses from alveoli to tissue and vice vera because capillaries are thin walled and the alveoli are just one cell in thickness, which allows the gas exchange of respiration to take place rapidly.

Assertion : ${CO}_{2}$ easily diffuses from alveoli to tissues and ${CO}_{2}$ from tissue to alveoli.

Reason : Alveoli is 2-celled thick and capillaries are thin walled.

The correct option is C A is true but R is false
${CO}_{2}$ easily diffuses from alveoli to tissue and vice vera because capillaries are thin walled and the alveoli are just one cell in thickness, which allows the gas exchange of respiration to take place rapidly.