Read the following statements (a to e) carefuly :-
(a) Triploplastic
(b) Bilateral symmetric
(c) Organ system organisation
(d) Pseudocoelomate
(e) Metameric segmentation
Which of the above statement(s) is/are correct for phylum Aschelminthyes

Options

A. a and b only
B. a, b, c and e
C. a, b, c and d
D. a, b, c, d and e

Answer

To determine which statements are correct for the phylum Aschelminthes, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement (a): Triploblastic**
- Aschelminthes are indeed triploblastic organisms. This means their body is derived from three embryonic layers: ectoderm, mesoderm, and endoderm.
- **Conclusion**: This statement is **correct**.

2. **Statement (b): Bilateral Symmetry**
- Aschelminthes exhibit bilateral symmetry, meaning their body can be divided into two mirror-image halves along a single plane.
- **Conclusion**: This statement is **correct**.

3. **Statement (c): Organ System Organisation**
- Aschelminthes possess an organ system level of organization, which means they have specialized organs that work together to perform complex functions.
- **Conclusion**: This statement is **correct**.

4. **Statement (d): Pseudocoelomate**
- Aschelminthes are classified as pseudocoelomates, which means they have a body cavity that is not completely lined by mesoderm.
- **Conclusion**: This statement is **correct**.

5. **Statement (e): Metameric Segmentation**
- Metameric segmentation is a characteristic of phylum Annelida, not Aschelminthes. Aschelminthes do not exhibit true segmentation.
- **Conclusion**: This statement is **incorrect**.

### Summary of Correct Statements:
- The correct statements for phylum Aschelminthes are (a), (b), (c), and (d). The only incorrect statement is (e).

### Final Answer:
The correct statements for phylum Aschelminthes are (a), (b), (c), and (d).