Which of the following is also called Tunicate ?

Options

A. Urchordata
B. Cephalochordata
C. Vertebrata
D. Both (1) and (2)

Answer

To solve the question "Which of the following is also called Tunicate?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the term "Tunicate":**
- Tunicates are marine animals that belong to the subphylum Urochordata. They are characterized by their outer layer made of a substance called tunicin.

2. **Identify the options given:**
- The options provided are:
1. O Quadrata
2. O Quadrata (this seems to be a repetition)
3. Vertebrata
4. Both 1 and 2

3. **Analyze the options:**
- **Option 1 (O Quadrata):** This does not refer to tunicates.
- **Option 2 (O Quadrata):** This is a repetition of option 1, and still does not refer to tunicates.
- **Option 3 (Vertebrata):** This refers to a subphylum that includes animals with a backbone, which are not tunicates.
- **Option 4 (Both 1 and 2):** Since options 1 and 2 do not refer to tunicates, this option is also incorrect.

4. **Correct Identification:**
- The correct term for tunicates is **Urochordata** (not listed in the options). However, based on the context, the closest option that could relate to tunicates is **Urochordata**, which is the subphylum that includes tunicates.

5. **Conclusion:**
- Since none of the options correctly identify tunicates, the answer based on the provided options is that the correct answer is **not listed**. However, based on the context of the question, we can conclude that **Urochordata** is the correct term for tunicates.

### Final Answer:
- The correct answer is **Urochordata** (not listed in the options).