Botany-(general)
NEET Botany (general) MCQ Question
Type: MCQ-diagram based-Hard-Class 12
A diagram shows a polynucleotide chain with labels for sugar, phosphate, and nitrogenous bases. Which component of this structure is responsible for the acidic nature of DNA?
A
Phosphate group
B
Sugar moiety
C
Nitrogenous base
D
Hydroxyl group
Correct Answer
Option A
Detailed Explanation
The phosphate group in the polynucleotide chain contributes to the acidic nature of DNA, as noted in the NCERT context where DNA is referred to as an acidic substance.
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