Assertion: Mitochondrion is semiautonomous cell organelleReason: Mitochondrial DNA encodes for all mitochondrial proteins, tRNAs and rRNA.
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a
Both assertion and reason are correct and reason correctly explains the assertion.
b
Assertion is correct and reason is incorrect.
c
Both assertion and reason are correct and reason does not correctly explain the assertion.
d
Both assertion and reason are incorrect.
answer is B.
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Detailed Solution
Mitochondrion is semiautonomous cell organelle because some of its proteins are encoded by its own DNA and many of them are encoded by chromosomal or nuclear DNA. Its DNA also has genes for the formation of about 22 types of tRNAs and 2 ribosomal RNAs. Hence it is described as semiautonomous cell organelle.