A part of North Atlantic ocean is covered by free floating brown alga. It is

Options

A. Dictyota
B. Alaria
C. Ectocarpus
D. Sargassum.

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks about a part of the North Atlantic Ocean that is covered by free-floating brown algae.

2. **Analyze the Options**: The options provided are:
- A) Dicota
- B) Euleria
- C) Ectocarpus
- D) Sargassum

3. **Understand the Context**: The North Atlantic Ocean is also known as the Sargasso Sea, which is famous for its unique floating algae.

4. **Recall Characteristics of the Algae**: The specific type of algae that is commonly associated with the Sargasso Sea is Sargassum, which is a type of brown algae.

5. **Eliminate Incorrect Options**:
- **Dicota**: This is not found in the Atlantic Ocean.
- **Euleria**: This is found in the Pacific Ocean, not the Atlantic.
- **Ectocarpus**: This is also not found in the North Atlantic Ocean.

6. **Identify the Correct Answer**: Since Sargassum is the algae that covers the North Atlantic Ocean (Sargasso Sea), the correct answer is D) Sargassum.

**Final Answer**: The part of the North Atlantic Ocean covered by free-floating brown alga is **Sargassum**.

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