Which type of sugar is present in case of DNA and RNA ?

Pentose sugar.

The correct answer is Option (2) - Pentose sugar

Explanation:

• DNA contains deoxyribose, a pentose sugar (a 5-carbon sugar).
• RNA contains ribose, which is also a pentose sugar.

Pentose sugars are a key component of the nucleotide structure in both DNA and RNA, forming the backbone of these molecules along with phosphate groups. Hexose, heptose, and tetrose sugars are not present in DNA or RNA.