Assertion: Chara is a green alga close to Bryophyta:
Reason: Sex organs are jacketed in Chara.

Options

A. If both assertion and Reason are true and the reason is a correct explanation of the assertion.
B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion and Reason are False.

Answer

**Step-by-Step Solution:**

1. **Understanding the Assertion**: The assertion states that "Chara is a green alga close to Bryophyta." To evaluate this, we need to understand the classification and characteristics of Chara and Bryophyta. Chara is indeed a green alga, commonly known as stonewort, and it shares some similarities with bryophytes, particularly in its reproductive structures and life cycle.

2. **Understanding the Reason**: The reason given is that "Sex organs are jacketed in Chara." This refers to the structure of the reproductive organs in Chara. In Chara, the male reproductive structure (antheridia) is called globule, and the female reproductive structure (oogonia) is called nuchal. Both of these structures are surrounded by protective layers, which can be described as "jacketed."

3. **Evaluating the Relationship**: Next, we need to determine if the reason provided is a correct explanation of the assertion. The jacketed sex organs in Chara do indicate a level of complexity in its reproductive structures that is reminiscent of bryophytes. This complexity supports the assertion that Chara is closely related to Bryophyta.

4. **Conclusion**: Both the assertion and the reason are true. The assertion that Chara is a green alga close to Bryophyta is supported by the fact that it has jacketed sex organs, which is a characteristic feature that links it to bryophytes. Therefore, we conclude that both the assertion and reason are correct, and the reason is indeed the correct explanation of the assertion.

**Final Answer**: Both the assertion and the reason are true, and the reason is the correct explanation of the assertion.

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