Read the given statements and select the correct option.
Statement 1 : Urochordates and cephalochordates are often called invertebrate chordates.
Statement 2: They are a connecting link between the invertebrates and the chordates.

Options

A. Both statements 1 and 2 are correct.
B. Statement 1 is correct but statements 2 is incorrect.
C. Statement 1 is incorrect but statement 2 is correct
D. Both statements 1 and 2 are incorrect

Explanation

To solve the question regarding the statements about Urochordates and Cephalochordates, we will analyze each statement step by step.

### Step 1: Analyze Statement 1
- **Statement 1**: "Urochordates and cephalochordates are often called invertebrate chordates."
- **Explanation**: Urochordates (like tunicates) and cephalochordates (like lancelets) are indeed classified as invertebrate chordates. This is because they do not possess a vertebral column (backbone), which is a defining characteristic of true vertebrates. Therefore, this statement is **correct**.

### Step 2: Analyze Statement 2
- **Statement 2**: "They are a connecting link between the invertebrates and the chordates."
- **Explanation**: While Urochordates and Cephalochordates are primitive forms of chordates, they are not considered a direct connecting link between invertebrates and chordates. Instead, they are classified as protochordates, which are early forms of chordates but do not serve as a direct evolutionary link. Thus, this statement is **incorrect**.

### Conclusion
Based on the analysis:
- **Statement 1** is correct.
- **Statement 2** is incorrect.

Thus, the correct option is: **Statement 1 is correct but Statement 2 is incorrect.**

### Final Answer
The correct option is: **Option B** (Statement 1 is correct but Statement 2 is incorrect).

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