Question

Match the cell organelle/ organism with DNA present in them.

Organelle / organism	Type of DNA
(A) Chloroplast	(p) Double stranded circular DNA
(B) Mitochondria	(q) cpDNA
(C) E. coli	(r) Single stranded circular DNA

• A. A - p, B - q, C - r
• B. A - r, B - p, C - q
• C. A - q, B - r, C - p
• D. A - q, B - p, C - r

Answer 1

The correct option is D A - q, B - p, C - r

The DNA is organized into discrete structures called as chromosomes. The eukaryotic chromosomes are distinct from prokaryotic chromosomes. The prokaryotes have a circular chromosome. The eukaryotes have more than one linear straight chromosome. The eukaryotic chromosomes are characterised by a well developed centre or centromere and ends called as telomeres. These structures are absent in prokaryotic chromosomes. In the eukaryotic cells, DNA is also present in cellular organelles like chloroplast and mitochondria. The DNA in these cell organelles is similar to the prokaryotic chromosome.