Assertion :Mitochondria are common to both pant and animal cells.
Reason: The number of mitochondria in a cell does not correspond to the function of the cell.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Mitochondria is the powerhouse of cells which are involved in production of energy currency that is ATP. All cells require energy to live and therefore mitochondria are found in all living cells whether plants or animals. Since, mitochondria are found in both plants and animals.
The number of mitochondria in a cell is dependent on how much energy that cell requires. For example, a muscle cell which are involved in locomotion or lifting weights will require more energy and more ATP than a skin cell. Therefore number of mitochondria in muscle cells will be higher as compared to that in skin cells. If the requirement of energy is more in the cell, number of mitochondria will be more. And therefore function of cell determines the number of mitochondria present. Hence, statement 2 is wrong.
So, the correct answer is 'Assertion is correct but Reason is incorrect'.

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Assertion :Mitochondria are common to both pant and animal cells. Reason: The number of mitochondria in a cell does not correspond to the function of the cell.

Assertion :Mitochondria are common to both pant and animal cells.
Reason: The number of mitochondria in a cell does not correspond to the function of the cell.