$ Classification based on the evolutionary relationships among the organisms is called phylogenetic classification.
! According to Binomial Nomenclature, each living organisms has a name of two parts.

Options

A. If both As and R are correct and R is correct explanation of As
B. If both As and R are correct but R is not correct explanation of As
C. If As is correct, R is wrong
D. If both As and R are wrong.

Answer

To solve the question regarding the classification based on evolutionary relationships and the concept of binomial nomenclature, we can break it down into a step-by-step analysis.

### Step-by-Step Solution:

1. **Understand the Assertion**: The assertion states that "classification based on the evolutionary relationships among the organisms is called phylogenetic classification."
- **Analysis**: Phylogenetic classification indeed refers to the method of classifying organisms based on their evolutionary history and relationships. This assertion is **correct**.

2. **Understand the Reason**: The reason given is "according to binomial nomenclature, each living organism has a name of two parts."
- **Analysis**: Binomial nomenclature is a formal system of naming species by giving each a name composed of two parts: the genus name and the species name. This statement is also **correct**.

3. **Evaluate the Relationship Between Assertion and Reason**: Now we need to determine if the reason provided is a correct explanation of the assertion.
- **Analysis**: While both statements are correct, the reason (binomial nomenclature) does not explain why phylogenetic classification is based on evolutionary relationships. They are related concepts in taxonomy, but one does not explain the other.

4. **Choose the Correct Option**: Based on the analysis:
- Both the assertion and reason are correct.
- The reason is not the correct explanation of the assertion.
- Therefore, the correct option is: "If both A and R are correct but R is not the correct explanation of A."

### Final Answer:
The correct answer is: **If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.**

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