Which of the following is incorrect match of the phylum, its coelom type, segmentation and presence or absense of notochord?

Options

A. `{:("Phylum","Coelom","Segmentation","Notochord"),("Platyhelminthes","Coelomate","Absent","Absent"):}`
B. `{:("Phylum","Coelom","Segmentation","Notochord"),("Annelida","Coelomate","present","Absent"):}`
C. `{:("Phylum","Coelom","Segmentation","Notochord"),("Aschelminthes","pseudocoelomate","Absent","Absent"):}`
D. `{:("Phylum","Coelom","Segmentation","Notochord"),("Chordata","Coelomate","present","present"):}`

Explanation

To solve the question regarding the incorrect match of the phylum, its coelom type, segmentation, and presence or absence of notochord, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Option A: Phylum Platyhelminthes**
- **Coelom Type:** Coelomate
- **Segmentation:** Absent
- **Notochord:** Absent
- **Analysis:** Platyhelminthes are actually **acoelomate**, meaning they do not have a coelom. Therefore, stating that they are coelomate is incorrect. The segmentation is indeed absent, and the notochord is also absent. Thus, this option is incorrect.

2. **Option B: Phylum Annelida**
- **Coelom Type:** Coelomate
- **Segmentation:** Present
- **Notochord:** Absent
- **Analysis:** Annelids are indeed **coelomate** and exhibit **metameric segmentation**. They do not possess a notochord. Therefore, this option is correct.

3. **Option C: Phylum Nematoda (likely intended as "Aschelminthes")**
- **Coelom Type:** Pseudocoelomate
- **Segmentation:** Absent
- **Notochord:** Absent
- **Analysis:** Nematodes are classified as **pseudocoelomate** and do not exhibit segmentation. They also lack a notochord. Hence, this option is correct.

4. **Option D: Phylum Chordata**
- **Coelom Type:** Present
- **Segmentation:** Present
- **Notochord:** Present
- **Analysis:** Chordates are indeed **coelomate**, exhibit segmentation, and possess a notochord at some stage of their development. Therefore, this option is correct.

### Conclusion:
The incorrect match is found in **Option A: Phylum Platyhelminthes**, where it is incorrectly stated as coelomate instead of acoelomate.

### Final Answer:
**Option A is the incorrect match.**

---