A : Scientific names for plants have been standarized through ICBN
R : Naming system which usees three word format was given by Linnaeus

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion
C. If Assertion is true statement but Reason is false
D. If both Assertion and Reason are false statements

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that "scientific names for plants have been standardized through ICBN."
- ICBN stands for the International Code of Botanical Nomenclature, which provides the rules and guidelines for naming plants.
- This statement is **true** because the ICBN indeed standardizes the naming of plants to ensure consistency and universality across different regions.

2. **Understanding the Reason (R)**:
- The reason states that "the naming system which uses a three-word format was given by Linnaeus."
- The three-word format refers to trinomial nomenclature, which is used for naming subspecies or varieties of organisms.
- While Linnaeus is known for developing the binomial nomenclature (two-word naming system), the trinomial nomenclature was actually introduced by Huxley.
- Therefore, this statement is **false** because it incorrectly attributes the trinomial nomenclature to Linnaeus.

3. **Evaluating the Relationship Between A and R**:
- Since the assertion is true and the reason is false, we can conclude that the reason does not correctly explain the assertion.
- Thus, the correct answer is that the assertion is true, but the reason is false.

4. **Final Conclusion**:
- Based on the evaluation, the correct option is that the assertion is true and the reason is false.