Assertion :Mitochondria and chloroplasts are semi-autonomous organelles. Reason: They are formed by division of pre-existing organelles as well as contain DNA but lack protein synthesizing machinery.

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 and chloroplast are considered as semi-autonomous cell organelles. They arise from pre-existing cell organelles by the process of fission. They have their own DNA and protein synthesizing machinery as well. The DNA in these cell organelles resembles prokaryotic chromosome.

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