Question: 139. The DNA present in chloroplast is :
(1) Linear, double stranded
(2) Circular, double stranded
(3) Linear, single stranded
(4) Circular, single stranded
Answer: Option (2)
Explanation:
Chloroplasts are semi-autonomous organelles that possess their own genetic material.
The DNA present in chloroplasts is circular in shape, similar to the DNA found in prokaryotic cells.
It is double stranded and not associated with histone proteins.
This supports the endosymbiotic theory, which states that chloroplasts originated from ancient photosynthetic prokaryotes.
Hence, the DNA present in chloroplast is circular and double stranded.