This section contains Assertion (A) and Reason (R ) type questions. Each questions has (1), (2), (3), and (4) out of which only one is correct.
Assertion (A) Bryophytes, pteridophytes and spermatophytes are also collectively called embryophyt.
Reason (R ) All their members possess an embryonic stages

Options

A. Both Assertion and Reason are correct, and Reason is the correct explanation of Assertion
B. Both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion
C. Assertion is correct, but Reason is incorrect
D. Assertion is incorrect, but Reason is correct

Answer

To solve the assertion and reason question regarding bryophytes, pteridophytes, and spermatophytes, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Assertion (A)**:
- The assertion states that "Bryophytes, pteridophytes, and spermatophytes are also collectively called embryophytes."

2. **Identify the Reason (R)**:
- The reason states that "All their members possess an embryonic stage."

3. **Evaluate the Assertion**:
- Bryophytes (mosses and liverworts), pteridophytes (ferns and horsetails), and spermatophytes (gymnosperms and angiosperms) are indeed collectively referred to as embryophytes. This is because they all exhibit an embryonic stage during their life cycle, which is a defining characteristic of these groups.

4. **Evaluate the Reason**:
- The reason provided is that all members of these groups possess an embryonic stage. This is accurate, as the term "embryophyte" itself is derived from the presence of an embryo in the life cycle of these plants.

5. **Determine the Relationship**:
- Since both the assertion and the reason are correct, and the reason accurately explains why the assertion is true, we conclude that the correct option is that both the assertion and the reason are correct, and the reason is the correct explanation for the assertion.

### Conclusion:
- The correct option is: **(1) Both assertion and reason are correct, and the reason is the correct explanation of the assertion.**

---