Ascaris is

Options

A. Diploblastic
B. Triploblastic
C. Monoblastic
D. Ablastic

Answer

**Step-by-Step Solution:**

1. **Identify the Organism**: The question asks about Ascaris, which is a type of roundworm belonging to the phylum Aschelminthes.

2. **Understand the Terms**: The terms diploblastic, triploblastic, monoblastic, and ablastic refer to the number of germ layers present in an organism:
- **Diploblastic**: Two germ layers (ectoderm and endoderm).
- **Triploblastic**: Three germ layers (ectoderm, endoderm, and mesoderm).
- **Monoblastic**: One germ layer.
- **Ablastic**: No germ layers.

3. **Determine the Germ Layers in Ascaris**: Ascaris is classified as a triploblastic organism because it has three germ layers: ectoderm, mesoderm, and endoderm.

4. **Conclusion**: Since Ascaris has three germ layers, it is triploblastic. Therefore, the correct answer is that Ascaris is triploblastic.

**Final Answer**: Ascaris is triploblastic.

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