Question

Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Nucleotides are phosphate esters of nucleosides
Reason (R): .The various nucleotides in nucleic acids are linked either through purine or pyrimidine bases.

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is not the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The correct option is C A is true but R is false

Nucleotides are phosphate esters of nucleosides.
The various nucleotides in nucleic acids are linked through phosphate ester groups. So, the assertion is true but the reason is false.
So, the correct answer is option (c).