Gracilaria ad Porphyra are the members of which algae class?

Answer

To determine the class of algae to which Gracilaria and Porphyra belong, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organisms**: Start by recognizing the two organisms in question: Gracilaria and Porphyra.

2. **Research the Characteristics**: Both Gracilaria and Porphyra are known to be types of algae.

3. **Classify the Algae**: Research indicates that Gracilaria is a genus of red algae. Similarly, Porphyra is also classified under the same group.

4. **Confirm the Classification**: Both Gracilaria and Porphyra are classified under the class of algae known as Rhodophyceae, which is commonly referred to as red algae.

5. **Conclude the Answer**: Therefore, the answer to the question is that Gracilaria and Porphyra are members of the class Rhodophyceae.

### Final Answer:
Gracilaria and Porphyra are members of the algae class Rhodophyceae.

---