AIIMS 2019 Botany Organelle DNA Assertion Reason Question
Assertion: DNA is found in mitochondria and chloroplast is called prochromosome. Reason: They are similar to prokaryotic chromosome.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
The assertion is true because mitochondrial and chloroplast DNA, often referred to as prochromosomes, indeed resemble prokaryotic DNA in their circular structure and lack of histones. The reason is also true, as these organelles are thought to have evolved from free-living prokaryotes through endosymbiosis, which explains their similar chromosomal characteristics. Option B is incorrect because the reason does correctly explain the assertion, while options C and D are false since both statements are accurate. Understanding this relationship highlights the evolutionary link between eukaryotic organelles and prokaryotic organisms.
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