NEET 1992 · Class 12

Molecular Basis of Inheritance

Adenine is

  1. (A)purine
  2. (B)pyrimidine
  3. (C)nucleoside
  4. (D)nucleotide

The NCERT line that answers it

Verbatim line

There are two types of nitrogenous bases – Purines (Adenine and Guanine), and Pyrimidines (Cytosine, Uracil and Thymine).

Chapter
Molecular Basis of Inheritance
Section
5.1.1 Structure of Polynucleotide Chain
Page
1
Words matched
17 of 17

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states 'Purines (Adenine and Guanine)', which directly identifies adenine as a purine, conclusively distinguishing it from pyrimidines, nucleosides, and nucleotides.

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