Assertion: Bryophytes are the amphibians of plant kingdom.
Reason: They are found in swamps and the areas where water and land meet.

Options

A. If both A and R are true, and R is the correct explanation of A
B. If both A and R are true, but R is not the correct explanation of A
C. If A is true but R is false
D. If both A and R are false

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Bryophytes are the amphibians of the plant kingdom." This is a true statement because bryophytes, which include mosses and liverworts, are indeed referred to as the amphibians of the plant kingdom.

2. **Understanding the Reason**:
- The reason given is that "They are found in swamps and the areas where water and land meet." While it is true that bryophytes thrive in moist environments, this statement does not fully explain why they are considered amphibians. They are called amphibians primarily because they require water for reproduction (fertilization).

3. **Evaluating the Relationship**:
- The assertion is true, but the reason does not adequately support the assertion. The reason is somewhat misleading as it only describes their habitat without addressing their reproductive dependency on water.

4. **Conclusion**:
- Based on the evaluation, the correct answer is that the assertion is true, but the reason is false. Therefore, the correct option is: "A is true, but R is false."