Assertion :- A nucleotide is an assemblage of three distinct components.
Reason : Nucleotide is made up of a heterocyclic compound, monosaccharide and nitrogenous base.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are trur but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is Flase.
D. If both Assertion & Reason are false.

Answer

### Step-by-Step Text Solution:

1. **Understanding the Assertion**: The assertion states that "A nucleotide is an assemblage of three distinct components." This is indeed true. Nucleotides are the building blocks of nucleic acids like DNA and RNA, and they consist of three main components.

2. **Identifying the Components of a Nucleotide**: A nucleotide is composed of:
- A nitrogenous base (which can be a purine or a pyrimidine)
- A pentose sugar (which can be ribose in RNA or deoxyribose in DNA)
- A phosphate group

3. **Analyzing the Reason**: The reason given is "Nucleotide is made up of a heterocyclic compound, monosaccharide and nitrogenous base." This statement is misleading. While it mentions components that are related to nucleotides, it incorrectly describes the structure. The term "heterocyclic compound" is not the correct terminology for the nitrogenous base in this context, and "monosaccharide" does not accurately describe the sugar component, which is specifically a pentose sugar.

4. **Conclusion**: Therefore, while the assertion is true, the reason provided is false. The correct answer to the question is that the assertion is true, but the reason is false.

### Final Answer:
Assertion is true, but the reason is false.

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