in urochordata notochord is found in

Options

A. Head of adult
B. Tail of adult
C. Tail of larva
D. Test of adult

Answer

To answer the question "In Urochordata, notochord is found in:", let's break down the information step by step.

### Step-by-Step Solution:

1. **Understanding Urochordata**:
- Urochordata is a subphylum of the phylum Chordata. Members of this group are commonly known as sea squirts.

2. **Life Cycle of Urochordates**:
- Urochordates undergo a significant transformation during their life cycle. They exhibit more pronounced chordate characteristics during their larval stage compared to their adult form.

3. **Chordate Characteristics**:
- In Urochordates, the notochord is a key characteristic of chordates. However, its presence varies between the larval and adult stages.

4. **Location of Notochord**:
- The notochord in Urochordates is specifically found at the caudal (tail) end of the organism. This is why they are named Urochordata, as "uro" refers to the tail.

5. **Evaluating the Options**:
- The options provided are:
- Head of adult
- Tail of adult
- Tail of larva
- Taste of adult
- The notochord is not present in the head of the adult or the taste of the adult. The tail of the adult does not contain the notochord as it degenerates during metamorphosis.

6. **Correct Answer**:
- The notochord is found in the **tail of the larva**. This is the stage where chordate characteristics, including the notochord, are most prominent.

### Final Answer:
In Urochordata, the notochord is found in the **tail of the larva**.