Assertion (A) : In reptiles, the temperature ...

CBSE Class 10 Science 2025 Solved Paper All Sets

Question : 19 of 20

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Assertion (A) : In reptiles, the temperature at which the fertilized eggs are kept decides the sex of the offsprings.

Reason (R) : Sex is not genetically determined in some animals.

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:

In few reptiles, the temperature at which fertilised eggs are kept determines whether the animals developing in the eggs will be male or female. It indicates that sex is not genetically determined in these organisms.

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