Select the incorrect statement.

Options

A. Digestive system is complete in Aschelminthes and Echinodermata but not in Platyhelminthes.
B. Segmentation is present in Annelida and Arthropoda but absent in Chordate.
C. Organ system level of organisation is found in Aschelminthes and Annelida but not in Ctenophora.
D. Circulatory system is absent in Platyhelminthes and Aschelminthes but present in Hemichordata.

Answer

To solve the question of selecting the incorrect statement, we will analyze each option provided in the question step by step.

### Step 1: Analyze Option 1
- **Statement**: "Digestive system is complete in Ascalmynthes and Echinodermata but not in Platyhalmynthes."
- **Analysis**:
- Ascalmynthes (more commonly known as Nematoda) and Echinodermata both have a complete digestive system, which includes a mouth and an anus.
- Platyhalmynthes (more commonly known as Platyhelminthes) has an incomplete digestive system, meaning it has only one opening (mouth) for both ingestion and egestion.
- **Conclusion**: This statement is **correct**.

### Step 2: Analyze Option 2
- **Statement**: "Segmentation is present in the annelida and arthropoda, but absent in caudates."
- **Analysis**:
- Segmentation is indeed present in Annelida (segmented worms) and Arthropoda (insects, arachnids, crustaceans).
- However, segmentation is also present in Chordata (which includes vertebrates), so saying it is absent in Chordata is incorrect.
- **Conclusion**: This statement is **incorrect**.

### Step 3: Analyze Option 3
- **Statement**: "Organ system level of organization is found in Eschalomyces and Annelida but not in Tenofora."
- **Analysis**:
- The term "Eschalomyces" seems to be a typographical error; it likely refers to "Aschelminthes" (Nematoda).
- Both Aschelminthes and Annelida exhibit an organ system level of organization.
- Ctenophora (commonly known as comb jellies) do not have a true organ system level of organization.
- **Conclusion**: This statement is **correct**.

### Step 4: Analyze Option 4
- **Statement**: "Circulatory system is absent in Platyhalaminthes and Asclementhes, but present in Hammy Cordata."
- **Analysis**:
- Platyhalminthes and Aschelminthes do not have a circulatory system; they rely on diffusion for transport.
- Chordata (including Hemichordata) have a circulatory system, which can be open or closed depending on the group.
- **Conclusion**: This statement is **correct**.

### Final Conclusion
After analyzing all the options, we find that the **incorrect statement is Option 2**.