Assertion (A) : In large animals, oxygen can ...

CBSE Class 10 Science 2025 Solved Paper All Sets

Question : 17 of 20

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Assertion (A) : In large animals, oxygen can reach different parts of the animal’s body easily.

Reason (R) : Respiratory pigments take up oxygen from the air and carry it to body tissues.

Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
Both Assertion (A) and Reason (R) are true and Reason (R) is not the correct explanation of Assertion (A).
Assertion (A) is true but Reason (R) is false.
Assertion (A) is false but Reason (R) is true.

Solution:

The assertion states that in large animals, oxygen can reach different parts of the body easily, which is true due to their efficient circulatory systems. The reason explains that respiratory pigments, such as hemoglobin, play a crucial role in transporting oxygen from the lungs to the tissues. Therefore, both the assertion and reason are correct and are related to each other.

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